Nike
Solid Open-Back One-Piece
This is the Nike Swim Solid Open-Back One-Piece, a women's one-piece swimsuit designed for chlorinated water use. It features a racerback style with a teardrop-shaped open back, wide V straps, soft unpadded cups, and high-cut leg openings. The fabric is durable for extended pool sessions; note that the style runs small, so sizing up is recommended.
- Gender
- female
- Style
- activewear, sporty, minimal
- Category
- Apparel & Accessories > Clothing > Swimwear
Color
Size
Specifications
Chlorine-resistant one-piece swimsuit with wide V-straps and soft cups.
Chlorine-resistant fabric, wide V-straps, soft unpadded cups, comfortable straps, regular cut.
- Material
- Body: 51% recycled polyester, 49% polyester; Lining: 50% polyester, 50% recycled polyester
- Style
- activewear, sporty, minimal
- Occasion
- beach-day, vacation, workout
- Gender
- female
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Swimwear
Additional Attributes
- chlorine-resistant fabric for long swim sessions
- wide V-strap design for freedom of movement
- soft unpadded cups for natural shaping
- ultra comfortable straps
- regular bikini cut (moderate coverage)
- open-back silhouette
- recommended to size up for best fit
- solid color design
Product Insights
For regular swimmers who prioritize durability and natural shaping, Nike's Solid Open-Back One-Piece delivers 200+ pool hours of chlorine and fade resistance through its recycled polyester build, while soft unpadded cups provide a natural bustline. The open back and wide V-straps enable full shoulder mobility for freestyle and backstroke, and the regular bikini cut offers moderate leg coverage. However, sizing runs small—buyers must size up 1–2 sizes, even for a fit that lays straps flat, and the minimal support suits A-C cups best, making D+ busts or active swimmers seek alternative compression.
- Sizing
Because the suit runs small, buyers size up 1–2 and Nike recommends size 36 for a size-34 sports bra.
Why this is supported
Customer reviews confirm the suit runs very small, with one stating,
On ne peut pas se fier à la taille, c'est fait très petit, j'ai dû prendre 2 tailles au dessus
Customer review, July 23, 2024Aggregated feedback indicates most buyers need 1–2 sizes up. Nike's Q&A directly addresses sizing, recommending,
Yes, we recommend sizing up to 36.
For someone who typically wears size 34 in Nike sports bras, should I size up to 36 in this swimsuit given the note that it runs small?One exception exists where the suit was too loose, but the overall guidance is to size up.
- Leg opening
Regular bikini cut yields moderate leg opening coverage.
Why this is supported
The swimsuit features a regular bikini cut. Per the Q&A,
The swimsuit has a regular bikini cut, which typically means a moderate leg opening — not a high cut.
What is the leg opening height—is it a moderate or high cut?This confirms the design provides standard coverage.
- Activity suitability
Buyers report good fit for gym swims and sauna when sized correctly.
Why this is supported
When sized correctly, the suit performs well. One buyer reports,
good quality, fits nicely, perfect for gym swims & sauna
Customer review, December 15, 2022This confirms the suit works for its intended use with proper sizing.
- Support
Soft, unpadded cups provide natural shaping but minimal support for D+ or active C-cup busts.
Why this is supported
This swimsuit features soft, unpadded cups intended for natural shaping, but both customer feedback and Nike's official guidance indicate the design provides minimal support for larger busts. The full polyester lining behind the cups ensures opacity when wet but does not enhance support. One reviewer reported:
Trop serré et pas de bonnet à la poitrine
Customer review, December 6, 2022The fit is described as tight in the chest area due to the small sizing and absence of cups, contributing to discomfort for larger busts. Nike's Q&A confirms the limitation:
The unpadded cups offer natural shaping but minimal support, so they may not provide enough support for a C cup or larger bust during active swimming.
Are the straps adjustable for length, and do the unpadded cups provide enough support for a C cup or larger bust?It further advises
For more support, consider a style with padded or underwire cups.
Are the straps adjustable for length, and do the unpadded cups provide enough support for a C cup or larger bust?The wide V-straps, marketed as
high-support
nike.com, stabilize the suit against the body but do not support the bust itself, a critical nuance. The straps are also non-adjustable, as noted in the Q&A:
The product information does not mention that the straps are adjustable.
Are the straps adjustable for length, and do the unpadded cups provide enough support for a C cup or larger bust?The open-back design prioritizes shoulder mobility over chest support, making the suit better suited for lap swimmers than those requiring bust support.
- Chlorine resistance
51% recycled polyester body and polyester lining resist chlorine for 200+ hours.
Why this is supported
Suits retain elasticity and shape after 200+ pool hours — compared to 30–40 hours for ordinary spandex.
joybikini.comYes, recycled polyester is good for swimming. It performs similarly to regular polyester, offering chlorine resistance, durability, and quick-drying properties.
textilesea.comThis is supported by fabric industry data and a customer review noting the suit's suitability for gym swims and sauna. Polyester also holds color well, though prolonged unrinsed chlorine or sunlight can cause gradual lightening.
The swimsuit's body contains 51% recycled polyester, and the lining 50%.
It was reported that recycled polyester reduces emissions by 32% and uses 59% less energy compared to virgin polyester.
medcraveonline.comThis recycled polyester comes from Nike's bottle recycling program, which
Nike diverts an average of 1 billion plastic bottles annually from landfills and waterways.
nike.com. So each purchase supports large-scale plastic waste reduction.
The straps are made entirely from polyester with no spandex, providing strong chlorine resistance and durability. According to swimsuitcustom.com,
100% Polyester | Very Good | 200+ | Cost-effective, extremely durable, strong chlorine resistance
swimsuitcustom.comThis ensures the straps maintain their tension and shape after hundreds of pool hours.
- Strap stability
Wide V-straps distribute tension and allow full shoulder mobility without adjustment.
Why this is supported
The wide V-straps distribute tension across a broader area than narrow straps. As noted on Nike.com,
Wide straps offer high-support, and are ideal for maximum compression and locked in feel.
nike.comThis design also frees the shoulder blades for unrestricted rotation in freestyle and backstroke, creating a locked-in feel without needing adjustability.
- Strap fit
Suit runs small; size up for straps to lay flat and feel comfortable.
Why this is supported
The suit runs small, so sizing up by 1–2 sizes is critical for strap comfort. A reviewer noted,
On ne peut pas se fier à la taille, c’est fait très petit, j’ai dû prendre 2 tailles au dessus
Customer review, July 23, 2024The Q&A confirms this, recommending sizing up. When properly sized, another reviewer reported it's
good quality, fits nicely, perfect for gym swims & sauna
Customer review, December 15, 2022indicating the straps feel comfortable during active use.
- Opacity
Full polyester lining keeps cups opaque when wet and after pool use.
Why this is supported
Catalog verified that the full polyester lining maintains opacity both when wet and with chlorine exposure.
the fabric remains opaque when wet
Support and shaping from unpadded cups — full_polyester_liningand the material's inherent chlorine resistance preserves this opacity over time;
polyester is highly resistant to chlorine
yitaifabrics.com- Shaping
Unpadded cups provide natural shaping, but minimal support for C-cup and larger.
Why this is supported
The unpadded cups provide natural shaping backed by a full lining, and the wide straps lock the fit in place.
provides a smooth, natural shape against the body
Support and shaping from unpadded cups — full_polyester_liningAdditionally, the wide straps distribute tension across the upper back, as Nike states:
Wide straps offer high-support, and are ideal for maximum compression and locked in feel.
nike.comHowever, for C-cup and larger busts, the tradeoff is noted:
The unpadded cups offer natural shaping but minimal support, so they may not provide enough support for a C cup or larger bust during active swimming.
Are the straps adjustable for length, and do the unpadded cups provide enough support for a C cup or larger bust?- Care
Rinse immediately in cool water; press water out in a towel; air-dry flat; avoid softeners and dryers.
Why this is supported
Multiple sources verify the recommended care routine for this swimsuit:
rinse it immediately in cold or lukewarm water
theconversation.comto remove chlorine and body oils. Also,
rinse sand immediately so it doesn’t grind into fibers while drying
northridgecleaners.com. For drying,
Roll the suit in a dry towel and squeeze
everydaycheapskate.comrather than wringing. Wash with a mild detergent, avoid fabric softeners because they
. Never use a tumble dryer —
heat can damage the fabric and reduce its elasticity!
persillaundry.comThe polyester fabric is inherently chlorine-resistant and colorfast, but these steps preserve its shape and color over many wears.
- Fade resistance
Black color retains saturation for hundreds of pool hours.
Why this is supported
The black color stays saturated after hundreds of pool hours because polyester resists chlorine and UV damage.
Unlike nylon, it doesn’t absorb much water and retains its color even after hundreds of hours in the pool.
joybikini.comThe all-polyester body and lining avoid the yellowing of spandex blends, and the recycled content matches virgin polyester in durability.
It performs similarly to regular polyester, offering chlorine resistance, durability, and quick-drying properties.
textilesea.comTo maximize color lifespan, rinse the suit in cold water immediately after pool use and dry in shade; sand should be rinsed off to prevent micro-abrasions. Some gradual fading over multiple seasons is typical for any swimwear.
The single most important tip for keeping your swimwear in good condition after the pool or the ocean is to rinse it immediately in cold or lukewarm water.
theconversation.comprolonged exposure to chlorine and sunlight can still cause some fading over time
Does the black color fade or discolor after prolonged exposure to chlorinated water or sunlight?- Durability
All-polyester fabric lasts 200+ pool hours and resists fading from chlorine.
Why this is supported
Recycled polyester, used in the suit,
performs similarly to regular polyester, offering chlorine resistance, durability, and quick-drying properties.
textilesea.comCombined with the all-polyester construction, the fabric lasts over 200 pool hours,
Suits retain elasticity and shape after 200+ pool hours — compared to 30–40 hours for ordinary spandex.
joybikini.comand its dye retention keeps the black color from fading:
The fabric accepts dyes beautifully and holds color exceptionally well, preventing the fading that often occurs after repeated exposure to sun and water.
yitaifabrics.com- Shoulder mobility
Open back frees shoulder blades for rotation during freestyle and backstroke.
Why this is supported
open-back style with V-strap routing frees the shoulder blades for unencumbered rotation in freestyle and backstroke
Wide V-strap comfort and stability — open_back_shoulder_mobilitycut to spread tension across the upper back and sit flat without digging in, creating a steady anchor that helps the suit feel secure
Support and shaping from unpadded cups — wide_v_strap_designopen-back style and smooth fabric feel good for extended wear and easy movement in the water
theme.
Image Analysis
2 images- 01
Product
Front view of a black one-piece swimsuit worn by a model; thin shoulder straps, scoop neckline and a small white Nike swoosh on the left chest are visible.
- SilhouetteOne-piece swimsuit with a fitted torso silhouette, high-cut leg openings, and a scooped front neckline.
1 region
x 0.22 · y 0.18 · w 0.56 · h 0.66 (high) - StrapsTwo narrow shoulder straps that run vertically from the neckline over the shoulders; straps appear to be the same black fabric as the body.
2 regions
x 0.34 · y 0.16 · w 0.08 · h 0.12 (high); x 0.58 · y 0.16 · w 0.08 · h 0.12 (high) - LogoSmall white swoosh logo positioned on the left chest above the bust.
1 region
x 0.56 · y 0.26 · w 0.06 · h 0.04 (high) - Fabric appearanceSmooth, matte black fabric with uniform texture and no visible pattern or seams on the front panel except minimal seam lines at the neckline and leg openings.
1 region
x 0.28 · y 0.22 · w 0.44 · h 0.52 (high) - Neckline bindingNarrow binding along the scooped neckline in the same black material creating a defined edge.
1 region
x 0.34 · y 0.20 · w 0.32 · h 0.08 (high)
Other
Studio shot with a standing model against a plain light-colored wall; soft, even lighting and slight shadowing to the model's left.
- Model and poseFemale model standing facing forward with arms relaxed at sides; visible from head to upper thighs.
1 region
x 0.12 · y 0.02 · w 0.76 · h 0.96 (high) - BackgroundPlain light neutral wall with minimal texture, creating high contrast with the black swimsuit.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Lighting and shadowSoft, even studio lighting with a subtle shadow visible along the left side of the model and faint shadow cast on the wall behind.
1 region
x 0.00 · y 0.10 · w 0.40 · h 0.80 (medium) - Image framingCentered composition with the model vertically centered and slight top crop above the head.
Colors
matte black· main body#0E0E0Ebright white· logo- SilhouetteOne-piece swimsuit with a fitted torso silhouette, high-cut leg openings, and a scooped front neckline.
- 02
Product
Rear view of a solid one-piece swimsuit on a model showing a racerback strap connection and a large teardrop-shaped open back; smooth matte fabric with visible seams and high-cut leg openings.
- Back openingLarge teardrop-shaped open back that exposes the central portion of the model's back, edged by the swimsuit fabric with a stitched hem
1 region
x 0.34 · y 0.26 · w 0.32 · h 0.28 (high) - Shoulder strapsTwo narrow shoulder straps form a racerback and meet at a small fabric junction at upper center back
1 region
x 0.40 · y 0.06 · w 0.20 · h 0.18 (high) - Upper back bandHorizontal band of swimsuit fabric runs beneath the strap junction and above the open back, with visible stitching along its lower edge
1 region
x 0.28 · y 0.18 · w 0.44 · h 0.12 (high) - Lower body coverage and center seamFull-coverage lower back and seat area made from the same smooth fabric with a visible vertical center seam running down the middle
1 region
x 0.28 · y 0.48 · w 0.44 · h 0.40 (high) - Leg openingsCurved, high-cut leg openings with stitched hems that sit above the hips
2 regions
x 0.24 · y 0.64 · w 0.18 · h 0.24 (medium); x 0.58 · y 0.64 · w 0.18 · h 0.24 (medium) - Fabric appearanceUniform, smooth matte knit fabric with minimal surface texture and consistent color across visible panels
1 region
x 0.22 · y 0.18 · w 0.56 · h 0.66 (medium)
Other
Studio portrait of a model showing the rear of the swimsuit against a plain light background with soft, even lighting.
- Model presenceFemale model wearing the swimsuit, shown from behind with arms relaxed at sides; head turned slightly to the right
1 region
x 0.08 · y 0.02 · w 0.84 · h 0.96 (high) - Background and lightingEven, neutral off-white background with soft diffuse lighting and minimal shadows
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Image crop and framingFull-body crop from upper head to upper thighs centered in frame, slight space above head and below hips
1 region
x 0.06 · y 0.00 · w 0.88 · h 1.00 (high)
Colors
matte black· main body#0E0E0D- Back openingLarge teardrop-shaped open back that exposes the central portion of the model's back, edged by the swimsuit fabric with a stitched hem
Documents & Data
Customer Reviews
7 total7 reviews · out of 5
Acheter une taille plus grande, c'est bien vrai
Merci d'avoir indiqué d'acheter une taille plus grande. C'est vraiment ce qu'il faut faire.
Très beau avec style
On ne peut pas se fier à la taille, c’est fait très petit, j’ai dû prendre 2 tailles au dessus. Par ailleurs, c’est un maillot très bien fait
Nice clean classic look swimsuit
Liked this swimsuit primarily for the open back; however I will have to return or exchange since the upper front is too loose. I usually wear size 10-12 in swimsuit, thus I ordered a size 12 but it is too loose.
Super
Confortable, pratique
Exactly what I was looking for
good quality, fits nicely, perfect for gym swims & sauna
Trop serré et pas de
Trop serré et pas de bonnet à la poitrine
Parfait
Très beau et bonne taille