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Black high-cut sculpting bikini bottom product image (primary)
Front view of a two-piece black swim set on a standing model showing a high-waist, high-cut bikini bottom and a matching black bikini top with thin straps and a small center tie detail.

Knix

Black High-Cut Sculpting Bikini Bottom

CA$9.99CAD
Out of Stock

This black high-cut sculpting bikini bottom, from Canadian brand Knix at Simons, is made with double-layer Premium Sculpt fabric that smooths and shapes the body. It features a tummy-flattening control panel, a high-cut, mid-rise silhouette, and UPF 50+ sun protection. Designed for women's swimwear, it pairs with a matching top sold separately.

Color
Black
Material
Double-layer Premium Sculpt fabric
Gender
female
Style
classic, minimal
Category
Apparel & Accessories > Clothing > Swimwear
View on merchant siteJSON

Specifications

High-cut sculpting bikini bottom with tummy control panel and sun protection.

Premium Sculpt fabric, tummy control panel, high-cut design, UPF 50+ sun protection.

Color
Black · black
Material
Double-layer Premium Sculpt fabric
Style
classic, minimal
Occasion
vacation, beach-day
Gender
female
Age Group
adult
Condition
new
Category
Apparel & Accessories > Clothing > Swimwear

Additional Attributes

  • double-layer Premium Sculpt fabric
  • smooths and hugs body while shaping curves
  • control panel to firm and flatten tummy
  • high-cut silhouette
  • mid-rise waistband
  • leg-lengthening effect
  • UPF 50+ sun protection
  • matching top sold separately

Product Insights

The Knix Black High-Cut Sculpting Bikini Bottom merges a super high-cut leg that elongates with medium back coverage to balance exposure, while its integrated control panel and 360° band provide uniform compression and midsection control without rolling or the need for separate shapewear. The double-layer, tight-knit sculpt fabric prevents sheerness when wet, maintains UPF 50+ protection that blocks 98% of UV rays even when wet, and resists curling at the leg edge. The primary tradeoff is the snug, sculpting fit: the waistband compresses without digging in, but the true-to-size sizing means the compression feels firm, and the high-leg design prioritizes elongation over full coverage.

Verified claims

Leg fit
Double-layer leg edge resists curling and the tighter knit avoids elastic pinch.
Coverage
Super high-cut leg with medium back coverage balances elongation and exposure.
Panel integration
Built-in control panel stays flat and eliminates separate shapewear.
Compression
360° band and tighter-knit fabric provide uniform compression without boning.
Wet performance
UPF 50+ protection remains effective when wet, and the double-layer fabric resists sheerness.
Sculpt fabric
Double-layer tight-knit sculpt fabric resists sheerness and smooths the body.
Sun protection
UPF 50+ fabric blocks 98% of UV rays even when wet.
Midsection control
Control panel resists rolling and the waistband compresses without digging in.
Fabric quality
Double-layer fabric resists sheerness and avoids uneven stretching.
Sizing
True to size per the brand's size guide; the 360° sculpting waistband may feel snug when sitting or bending.
Tummy control
Double-layer tummy panel shapes discreetly without rolling or showing.
Care
Machine wash on a gentle cycle with like colors, avoid bleach and fabric softeners, and hang dry away from direct sunlight; rinse after swimming because chlorine can degrade the fabric.
Sculpting construction
Integrated control panel and 360° band eliminate the need for separate shapewear and resist rolling.
Leg cut
High-cut leg elongates; medium coverage avoids constant adjustment.
Period protection
These Knix swim bottoms are not sufficient for medium to heavy period flow and are best used for light days or as backup.
Coverage options
Knix sculpt swim bottoms are offered in both medium coverage (high rise) and cheeky coverage (dipped) styles.

Product record

Title
Black High-Cut Sculpting Bikini Bottom
Brand
Knix
Price
55 CAD
Availability
In stock

Buying Guide

1 comparison · 10 sources

Uses

Smoothing and shaping swimwear for pool or beach days

A high-cut bikini bottom with double-layer Premium Sculpt fabric and a tummy control panel, designed to smooth, slightly hug the body, and shape natural curves while firming and flattening the tummy. The brand describes it as a comfortable mid rise with a cheeky bum cut that elongates the legs.[1,2,3]

Sun protection while you're out in the sun

This high-cut bikini bottom is made with UPF 50+ fabric that the brand says protects your skin while you soak up the sun. It's a swimwear choice for beach or pool days when you want coverage built into your suit.[1,3]

A high-cut bikini bottom for a leg-lengthening look

Swim days when you want a bottom designed to make legs look longer: this Knix style pairs a super high-cut leg opening with a mid rise and medium, cheeky-coverage rear. The leg-elongating effect comes from the product description rather than reported wearer feedback, so results may vary from person to person.[1,3]

Product comparison

Compared within this brand.

Why and when to choose each product
This product

Black High-Cut Sculpting Bikini Bottom

Knix

simons.ca

Same brand

Black V-Neck Sculpting Cheeky Bottom

Knix

simons.ca

Same brand

Black V-Neck Sculpting One-Piece

Knix

simons.ca

Black High-Cut Sculpting Bikini Bottom: Choose this if you want a black, high-cut mid-rise bikini bottom with light shaping: its double-layer Premium Sculpt fabric (58% nylon, 42% LYCRA elastane) is designed to smooth and shape, with a control panel meant to firm and flatten the tummy. It offers medium coverage with a cheeky rear, UPF 50+ sun protection, and a matching top sold separately. Note the smooth, hugging feel comes from a tighter knit, which may feel snug if you prefer a relaxed fit.[1,3]Black V-Neck Sculpting Cheeky Bottom: Choose this if you want a mid-rise, ultra-high-cut cheeky bikini bottom in solid black with a curved V-shaped waistline. Its double-layer Premium Sculpt fabric (58% nylon, 42% LYCRA elastane body) is designed to smooth, slightly hug, and shape your natural curves, with UPF 50+ sun protection. Note that the cheeky cut provides minimal rear coverage, and the matching top is sold separately.[4,5,6]Black V-Neck Sculpting One-Piece: Choose this if you want a classic black one-piece with light shaping: its double-layer Premium Sculpt fabric smooths and gently hugs the body, with a deep V-neck, adjustable straps, soft cups with removable foam padding, moderate bikini-style coverage, and UPF 50+ sun protection. Note that one reviewer says this swimwear tends to run small, so consider sizing up if you are between sizes or want a less compressive fit.[7,8,9,10]

Image Analysis

3 images
Black high-cut sculpting bikini bottom product image (primary)
01

Product

Front view of a two-piece black swim set on a standing model showing a high-waist, high-cut bikini bottom and a matching black bikini top with thin straps and a small center tie detail.

  • Bottom silhouetteHigh-waist bikini bottom with a high-cut leg opening and a smooth front panel; waistband sits above the model's natural hipline.
    1 regionx 0.34 · y 0.36 · w 0.28 · h 0.34 (high)
  • Bottom material finishFabric appears smooth with a matte or low-sheen finish and no visible pattern or texture.
    1 regionx 0.36 · y 0.44 · w 0.20 · h 0.20 (high)
  • Top designMatching black bikini top with narrow shoulder straps, a ruched upper edge on the cups, and a small decorative tie or bow at the center front.
    1 regionx 0.30 · y 0.12 · w 0.40 · h 0.18 (high)
  • Visible seams and constructionSubtle seams are visible along the bikini top cup edges and along the bottom's leg openings, indicating standard cut construction.
    1 regionx 0.30 · y 0.12 · w 0.40 · h 0.40 (medium)
  • CoverageBottom provides moderate-to-low side coverage due to the high-cut leg while offering fuller front coverage because of the higher waistband.
    1 regionx 0.34 · y 0.36 · w 0.28 · h 0.34 (high)

Other

Studio shot of a standing female model against a white seamless background holding a woven straw tote and wearing black sandals; even studio lighting produces a soft shadow on the backdrop.

  • Model pose and viewFull-body frontal pose with weight on one leg, arms relaxed (one arm holding a bag), facing slightly toward the camera.
    1 regionx 0.18 · y 0.03 · w 0.64 · h 0.94 (high)
  • Background and lightingPlain white seamless background with soft studio lighting producing a faint shadow to the model's left and a clean highlight on the model's right side.
  • Prop - woven toteTan woven straw tote bag with braided black handles, carried in the model's left hand and hanging beside the left thigh.
    2 regionsx 0.12 · y 0.58 · w 0.18 · h 0.38 (high); x 0.14 · y 0.48 · w 0.09 · h 0.18 (high)
  • Prop - sandalsFlat black sandals with a decorative metallic chain or link detail across the strap, visible on both feet.
    2 regionsx 0.40 · y 0.90 · w 0.18 · h 0.08 (high); x 0.56 · y 0.90 · w 0.18 · h 0.08 (high)
  • Image crop and qualityFull product and model are fully visible from head to feet with even focus and no motion blur.

Colors

black· bottom#251D1Cblack· top#1B151A
Black high-cut sculpting bikini bottom product image 2
02

Product

Front view close-up of a black high-rise, high-cut bikini bottom worn by a model; smooth matte stretch fabric with clean finished waist and leg openings and a visible center-front seam at the crotch.

  • SilhouetteHigh-rise bikini bottom with a high-cut leg opening and a gently curved waistband that sits above the navel on the model.
    1 regionx 0.12 · y 0.28 · w 0.76 · h 0.46 (high)
  • Fabric appearanceUniform smooth, matte stretch fabric with minimal visible texture and slight surface sheen from lighting.
    1 regionx 0.20 · y 0.40 · w 0.60 · h 0.30 (high)
  • Seam and constructionClean finished waistband seam and narrow finished leg-edge seams; a small center-front seam is visible at the crotch point.
    2 regionsx 0.33 · y 0.56 · w 0.34 · h 0.15 (high); x 0.19 · y 0.34 · w 0.62 · h 0.10 (high)
  • CoverageFront shows moderate coverage panel narrowing toward the crotch with higher hip cut lines creating elongated leg exposure.
    1 regionx 0.18 · y 0.36 · w 0.64 · h 0.40 (high)
  • Visible adjoining garmentPortion of a matching black bikini top band is visible above the waistband.
    1 regionx 0.22 · y 0.06 · w 0.56 · h 0.20 (high)
  • No visible brandingNo logos, printed labels, or brand marks visible on the fabric in this view.

Other

Studio cropped close-up of a model torso and upper thighs against a plain light wall with directional lighting causing soft shadows; model hands and part of a ring are visible at the image edges.

  • Shot compositionCropped frontal studio shot centering on the lower torso and hips; image excludes the model's head and lower legs.
  • Background and lightingPlain light-colored wall background with a shadow cast to the right side indicating directional lighting from the left.
    1 regionx 0.00 · y 0.00 · w 1.00 · h 1.00 (medium)
  • Model hands and accessoriesModel's left and right hands are visible at the image edges; a thin ring is visible on the model's right hand.
    2 regionsx 0.00 · y 0.68 · w 0.15 · h 0.30 (high); x 0.85 · y 0.64 · w 0.15 · h 0.34 (high)
  • Skin detailModel skin shows natural highlights and small freckles or moles; no visible tattoos or scars in the framed area.
    1 regionx 0.20 · y 0.30 · w 0.60 · h 0.56 (high)

Colors

deep black· bikini bottom main body#151314
Black high-cut sculpting bikini bottom product image 3
03

Product

Rear view of a model wearing a smooth matte black high-waist bikini bottom; matching black bikini top band and adjustable straps are partially visible.

  • Rear high-waist bottom silhouetteHigh-rise bikini bottom seen from the back with a full-coverage rear panel that tapers into high-cut leg openings.
    1 regionx 0.20 · y 0.45 · w 0.60 · h 0.45 (high)
  • Fabric appearanceSmooth, single-layer appearing fabric with a matte finish and no visible pattern or texture.
    1 regionx 0.20 · y 0.45 · w 0.60 · h 0.45 (high)
  • Crotch seam and center stitchingShort vertical seam visible at the center of the lower rear panel where the crotch meets the back panel.
    1 regionx 0.46 · y 0.80 · w 0.08 · h 0.10 (high)
  • Waistband constructionFolded waistband with a smooth top edge that sits above the model's natural waistline.
    1 regionx 0.25 · y 0.40 · w 0.50 · h 0.08 (high)
  • Matching top band and strapsMatching black bikini top band with center back hook closure and adjustable narrow shoulder straps are visible above the waistband.
    1 regionx 0.20 · y 0.18 · w 0.60 · h 0.20 (high)
  • Hardware on strapsSmall rectangular adjustable slides on each shoulder strap visible on the back.
    2 regionsx 0.28 · y 0.22 · w 0.06 · h 0.10 (high); x 0.66 · y 0.22 · w 0.06 · h 0.10 (high)

Other

Studio rear-shot of a model against a plain light background with soft shadowing; model is turned slightly left and wearing small hoop earrings.

  • Shot compositionVertical studio photograph centered on model from mid-shoulder to upper thighs, cropped just above the head and below the knees.
  • Background and lightingEven light grey to off-white background with a soft shadow cast to the left of the model indicating a directional studio light source from the right.
  • Model poseModel standing with weight shifted slightly to the left, left arm relaxed at side and head turned to the left profile.
  • Hair and accessoryLong dark brown hair draped over the right shoulder and a single small gold hoop earring visible on the left ear.
    2 regionsx 0.50 · y 0.02 · w 0.40 · h 0.22 (medium); x 0.24 · y 0.10 · w 0.10 · h 0.10 (medium)

Colors

matte black· bikini bottom rear panel#221C1Ematte black· bikini top band and straps#1C0C0A

Documents & Data

Reddit Insights

2 threads · r/PeriodUnderwear, r/womensfashion

Reddit users have mixed opinions on Knix bikini bottoms, praising the style and comfort of the sculpt swim bottoms for coverage, but criticizing the leakproof bikini's absorbency for period protection.

mixed sentiment65% match

Positive sentiment surrounds the style and coverage of the sculpt swim bottoms, while negative sentiment is attached to the leakproof bikini's insufficient absorbency.

Themes

Leak Protection / Absorbencynegative
Style and Coverage (High-Waisted/Cheeky)positive

Use Cases

  • Light period backup or end-of-cycle use
  • High-waisted cheeky swimwear for flattering coverage

Watch Out For

highThe leakproof bikini is thin and comfy but nearly useless for catching leaks on heavier days; users report bleeding through the absorbent part.
lowThe sculpt swim bottoms may have cheekier cuts, so coverage preferences vary.

Compared To

vs Thinx and Bambody

Users report that Thinx also leak, while Bambody period underwear is much more absorbent than Knix leakproof bikini.

Source Threads

  • Disappointment with Knix Leakproof Bikini Absorbency

    I have these as well, and while they are thin and comfy, they are nearly useless for catching leaks.

    u/catashtrophe84r/PeriodUnderwearView thread →

  • Recommendation for Knix Sculpt Swim Bottoms for Cheeky High-Waisted Look

    Check out Knix - sculpt high rise bikini swim bottom (medium coverage) or sculpt dipped bikini swim bottom (cheeky coverage).

    u/Comfortable-Nature37r/womensfashionView thread →

Provenance

Merchant Link
https://www.simons.ca/en/swimwear/bottoms/high-waist/black-high-cut-sculpting-bikini-bottom--22786-2607?colourId=0
Updated