INNER SELF
Micro-Perforated Built-In Brief Slit Short
The INNER SELF at I.FIV5 micro-perforated built-in brief slit short is an ultra-lightweight athletic short intended for training and other high-movement activities. It uses a 95 GSM micro-perforated stretch nylon-blend fabric with Airgrid technology that is quick-dry, breathable and moisture-wicking, and includes a built-in microfibre brief, drawcord-adjustable elastic waist, small rear zip pocket, side vents and slits, and anti-chafing heat-sealed edging. The inseam is 12 cm (4.75 in) on the measured size MEDIUM, and the short has a front logo.
- Material
- stretch nylon-blend
- Style
- activewear, performance, technical, sporty, lightweight, breathable
- Category
- Apparel & Accessories > Clothing > Shorts
Specifications
Ultra-lightweight micro-perforated athletic shorts with built-in brief and quick-dry Airgrid™ fabric for high-performance training.
Micro-perforated stretch nylon blend with Airgrid™ technology, quick-dry and moisture-wicking; built-in microfibre brief; drawcord elastic waist; back zip pocket; side vents; anti-chafing heat-sealed edging; 95 GSM ultra-light weight; 12 cm inseam.
- Material
- stretch nylon-blend
- Style
- activewear, performance, technical, sporty, lightweight, breathable
- Occasion
- workout, sports-event, travel
- Gender
- male
- Age Group
- adult
- Condition
- new
- Category
- Apparel & Accessories > Clothing > Shorts
Additional Attributes
- ultra-lightweight micro-perforated stretch nylon-blend fabric
- quick-dry, breathable, moisture-wicking construction
- Airgrid™ technology for enhanced ventilation
- built-in microfibre brief for support
- drawcord-adjustable elastic waist for a secure fit
- small zip pocket at back for secure storage
- side vents for increased mobility
- anti-chafing heat-sealed edging
- 95 GSM ultra-light fabric weight
- brand logo on front
- 12 cm (4.75 inch) inseam
- slit short design
Product Insights
Sizes S–XL correspond to natural waist 76–107 cm (30–42 in); measure at the narrowest point, not the short. Built-in microfibre brief replaces underwear; size for a snug, supportive liner fit rather than just a secure waist. Airgrid™ micro-perforation runs through the main fabric, not just isolated vent panels, for airflow across the short. Heat-sealed edging creates flat, thread-free joins that reduce chafing, though no short eliminates chafing for every wearer. Machine wash cold, do not bleach, do not tumble dry, do not professionally clean, and skip fabric softener; ironing with or without steam is permitted. The 4.75-inch split cut suits road racing, track and fast training; longer easy miles may call for more coverage.
Verified claims
- fit
- Sizes S–XL correspond to natural waist 76–107 cm (30–42 in); measure at the narrowest point, not the short.
- inseam
- 4.75-inch (12 cm) inseam is a short, mid-to-upper-thigh cut measured on size Medium; other sizes are graded around that reference.
- liner
- Built-in microfibre brief replaces underwear; size for a snug, supportive liner fit rather than just a secure waist.
- waistband
- Drawcord-adjustable elastic waist is the main hold mechanism; there is no silicone grip on the hem.
- material
- 74% nylon, 26% spandex gives a high-stretch, soft hand with four-way movement.
- ventilation
- Airgrid™ micro-perforation runs through the main fabric, not just isolated vent panels, for airflow across the short.
- fabric_weight
- At 95 GSM the short is ultra-light, but a more open perforated structure can reduce opacity and be more sensitive to snagging.
- vents
- Side vents/slits add airflow and stride freedom, trading a little leg coverage for mobility.
- storage
- Small rear zip pocket holds a key, card or gel, not a modern large phone.
- anti_chafe
- Heat-sealed edging creates flat, thread-free joins that reduce chafing, though no short eliminates chafing for every wearer.
- care
- Machine wash cold, do not bleach, do not tumble dry, do not professionally clean, and skip fabric softener; ironing with or without steam is permitted.
- durability
- Heat-sealed edges hold up with cold wash and air dry, but hot drying can cause lifting, stiffening or delamination.
- visibility
- No reflective detailing is specified on this style; add a light or reflective accessory for low-light runs.
- style
- Dark matte shell with a light left-front graphic and visible micro-perforation texture; short athletic silhouette with side slit.
- variants
- Black and Grey are each offered in S–XL at 90 CAD, and every combination is in stock.
- value
- Flat 90 CAD across all sizes means there is no financial penalty for sizing up to get the right fit.
- use_cases
- The 4.75-inch split cut suits road racing, track and fast training; longer easy miles may call for more coverage.
- construction
- Bonded, low-profile seams and a built-in brief reduce bulk under fitted layers.
- moisture_behavior
- Nylon wicks well and the fabric is quick-dry, but nylon's low air permeability can trap heat without the micro-perforation and vents.
- comfort
- Flat bonded edges and a free-moving liner reduce friction for high-repetition activities.
- fit_guidance
- Wear the waist snug at the natural waist and let the shell float clear of the thigh for best mobility.
Product record
- Title
- Micro-Perforated Built-In Brief Slit Short
- Brand
- INNER SELF
- Price
- 90 CAD
- Availability
- In stock
Buying Guide
1 comparison · 10 sourcesUses
Shorts for training with built-in brief coverage
This athletic short pairs a short outer shell with a built-in inner brief layer and a front drawstring, making it an option for workouts where you want both layers in one garment. The side slit at the hem is designed to allow greater leg mobility, and the short length sits well above mid-thigh. A reflective cross graphic on the front adds a visible detail.[2,3]
Comfort and Cooling During Activity
Designed for active use, the micro-perforated short features a breathable, stretch nylon-blend fabric that wicks moisture and dries quickly. Its design includes side vents and perforated panels near the hem on both legs to enhance airflow and keep you comfortable while moving.[1,3]
A secure, adjustable fit for workouts
For training or sports where you want your shorts to stay put, this pair combines an elastic waistband with a front drawstring you can tighten for a secure fit, plus a built-in microfibre brief layer underneath the outer shell. Heat-sealed anti-chafing edging is designed to help reduce irritation as you move. The smooth micro-perforated fabric keeps the shorts in the lightweight athletic style suited to active wear.[1,2,4]
Stashing a small essential while you train
On a run or workout, the zip pocket at the back of these INNER SELF shorts gives you a spot to carry a small essential like a key, so you do not have to hold it or leave it behind. The zipper keeps it secured while you move.[1]
Product comparison
Compared within this brand.
| Micro-Perforated Built-In Brief Slit Short: Choose this if you want an ultra-light running or training short whose micro-perforated 74% nylon and 26% spandex fabric (95 GSM, with Airgrid™ technology) is quick-dry, breathable and moisture-wicking, with a built-in microfibre brief and anti-chafing heat-sealed edging. It suits those who like a very short cut—about 12 cm (4.75 inches) inseam in size medium—with side slits for mobility, a drawcord-adjustable elastic waist, and a small zip pocket at the back of the waistband. It comes in Black or Grey in sizes small to x-large, though the hem sits well above mid-thigh, so it may feel too short if you prefer more coverage.[1,2,3] | Micro-Perforated Shorts With Built-In Bike Short Length: 13 Cm (5"): Choose this if you want a two-in-one run short: a loose outer layer with side vents over a separate, tight-fitting built-in bike short, in an ultra-light 95 GSM stretch fabric (74% nylon, 26% spandex) that is quick-dry, breathable and moisture-wicking with Airgrid technology. It suits runners who want storage and comfort details, including a cell-phone patch pocket on the inner short, a zip back pocket, heat-sealed anti-chafing edging, a drawcord-adjustable elastic waist, and a reflective logo on a 13 cm (5 inch) inseam; note the silicone thigh trim and anti-chafing edging are stated design purposes rather than reported outcomes. It comes in Black and Ivory/Cream Beige across sizes SMALL to X-LARGE.[5,6,7,8] | Dynamiq™ Ribbed Running Short With Pockets: Choose this if you want a fitted, mid-thigh running short in soft, lightweight ribbed fabric that offers compression, moisture wicking, breathability and four-way stretch, with built-in underwear and a drawcord-adjustable elastic waist. It suits runners who need storage on the move: two patch pockets, a zipped back pocket and a slit pocket hidden in the waistband. Made of 78% nylon and 22% spandex, with a reflective element for low-light visibility.[9,10] |
Image Analysis
3 images- 01
Product
Athletic short seen on a model: short outer shell with a left-front reflective cross graphic, front drawstring, and a short inner layer visible under the outer hem on the right thigh; fabric appears dark (near black) with a matte finish and a small side slit at the outer hem.
- Outer short silhouetteShort athletic outer shell with a straight hem and a short vertical slit at the outer side seam on the left side when viewed; hem sits well above mid-thigh.
1 region
x 0.28 · y 0.42 · w 0.36 · h 0.28 (high) - Front drawstringNarrow drawstring visible at the front center of the shorts, tied or hanging down over the outer shell.
1 region
x 0.45 · y 0.48 · w 0.06 · h 0.07 (high) - Left-front graphicSmall cross-like reflective graphic positioned on the left-front panel of the outer short, roughly centered on the left thigh area.
1 region
x 0.34 · y 0.50 · w 0.08 · h 0.10 (high) - Inner layer visibleA tighter inner layer or liner is visible beneath the outer shell on the right thigh, extending slightly below the outer hem.
1 region
x 0.52 · y 0.50 · w 0.14 · h 0.14 (high) - Short fabric appearanceOuter shell fabric appears smooth with a matte finish and uniform dark color.
Other
Studio lifestyle photograph showing a model mid-step against a plain light background with soft shadows under the feet; even, diffuse lighting highlights form and texture.
- Model poseMale model photographed mid-step, weight on the left leg with the right leg lifted forward and the torso turned slightly to the right.
1 region
x 0.15 · y 0.05 · w 0.70 · h 0.90 (high) - Background and lightingPlain light gray to white seamless background with even, diffuse studio lighting and a soft shadow beneath the model's feet.
- Visible text on tank“INNER SELF”
1 region
x 0.41 · y 0.17 · w 0.16 · h 0.05 (high) - Footwear and socks presentModel wears high white crew socks and maroon athletic shoes; these are props in the scene and not described as the product.
1 region
x 0.22 · y 0.72 · w 0.56 · h 0.25 (high)
Colors
very dark navy / black· outer short fabricwhite· left-front cross graphic- Outer short silhouetteShort athletic outer shell with a straight hem and a short vertical slit at the outer side seam on the left side when viewed; hem sits well above mid-thigh.
- 02
Product
Front view of a pair of dark athletic shorts worn on a model showing elastic waistband with external drawstring, a reflective left-leg graphic, and a small grid of perforations near the right hem. Fabric has a fine micro-perforated texture visible across panels.
- Waistband and drawstringElasticized waistband with gathered fabric and a visible external flat drawstring that hangs centered over the fly; drawstring ends have small rectangular plastic aglets.
1 region
x 0.34 · y 0.26 · w 0.32 · h 0.18 (high) - Main fabric textureSmooth lightweight athletic fabric with a consistent micro-perforated grid texture visible across the shorts' surface.
1 region
x 0.20 · y 0.30 · w 0.60 · h 0.52 (high) - Left-leg graphicLarge abstract cross-shaped graphic printed on the left thigh in a high-contrast light color, roughly oriented horizontally with one arm extending toward the outer seam.
1 region
x 0.04 · y 0.57 · w 0.30 · h 0.30 (high) - Right hem perforation panelSmall rectangular area near the right short hem composed of a regular dot-grid of micro-perforations or laser-cut holes forming a vent-like pattern.
1 region
x 0.72 · y 0.78 · w 0.15 · h 0.10 (high) - Center front seamVertical center front seam/fly stitch line visible from waistband down between the legs.
1 region
x 0.47 · y 0.34 · w 0.08 · h 0.50 (high) - Hem finishStraight stitched hem on both legs with a narrow folded edge.
1 region
x 0.12 · y 0.84 · w 0.76 · h 0.12 (high) - Shirt overlap at waistLower edge of a matching dark top rests over the waistband, partially covering the upper front of the shorts.
1 region
x 0.20 · y 0.10 · w 0.60 · h 0.28 (high)
Other
Studio product shot showing a cropped frontal view of a model wearing the shorts; neutral light background and soft even lighting produce minimal shadows; hands and upper thighs of the model are visible.
- Shot compositionCropped frontal studio shot framing the model from mid-torso to mid-thigh, centered on the shorts.
- Background and lightingEven, neutral light background with soft directional lighting that creates subtle shadows under the waistband and inner thighs.
- Model hands visibleModel's hands and forearms appear at the left and right image edges, partially cropped.
2 regions
x 0.00 · y 0.10 · w 0.15 · h 0.60 (high); x 0.85 · y 0.10 · w 0.15 · h 0.60 (high)
Colors
very dark navy· shorts main fabricblack· drawstringlight gray· left-leg graphicpale gray perforation· right-hem perforation area- Waistband and drawstringElasticized waistband with gathered fabric and a visible external flat drawstring that hangs centered over the fly; drawstring ends have small rectangular plastic aglets.
- 03
Product
Rear view of a dark navy athletic short showing a wide elastic waistband with a small zip pocket at center back, center back seam, side slits, and micro-perforated ventilation along the lower hem on both legs.
- Overall silhouetteShorts shown from the rear with a mid-rise wide waistband and a relaxed, slightly flared leg opening.
1 region
x 0.08 · y 0.20 · w 0.84 · h 0.60 (high) - Waistband and pocketWide elastic-looking waistband with a horizontal back pocket integrated into the upper center of the waistband; a small horizontal zipper pull is visible at the pocket opening.
1 region
x 0.40 · y 0.22 · w 0.20 · h 0.07 (high) - Center back seamVertical seam runs down the center back of the shorts from waistband toward the hem.
1 region
x 0.49 · y 0.29 · w 0.04 · h 0.48 (high) - Micro-perforated hemRows of small, regularly spaced square perforations form a ventilation panel along the lower front portion of each leg near the hem, visible on both left and right legs.
2 regions
x 0.10 · y 0.67 · w 0.36 · h 0.16 (high); x 0.54 · y 0.67 · w 0.36 · h 0.16 (high) - Side slitShort vertical slit at the side hem on the left leg (wearer left) allowing greater leg mobility.
1 region
x 0.05 · y 0.60 · w 0.12 · h 0.20 (high) - Fabric textureSmooth technical knit with a subtle micro-grid texture visible across the shorts fabric.
1 region
x 0.15 · y 0.35 · w 0.70 · h 0.45 (medium) - Zipper pull detailSmall dark zipper pull with a short tab visible at the top center of the waistband pocket.
1 region
x 0.48 · y 0.24 · w 0.04 · h 0.03 (high)
Other
Image shows a model wearing the shorts from behind against a neutral light background; the model's shirt hem and printed text are visible above the waistband. Even, studio lighting with soft shadows highlights texture and perforations.
- Visible shirt text“SHAPED FROM WITHIN”
1 region
x 0.30 · y 0.08 · w 0.40 · h 0.08 (high) - Visible shirt subtext“© RACING TEAM”
1 region
x 0.39 · y 0.15 · w 0.22 · h 0.04 (high) - Model and backgroundPartial view of a standing model's lower torso and upper legs; plain light gray to white studio background with soft shadow under the model.
- Shot compositionCropped rear three-quarter framing centered on the shorts with hands and forearms partially visible at image edges.
Colors
dark navy· main fabricblack· zipper pull- Overall silhouetteShorts shown from the rear with a mid-rise wide waistband and a relaxed, slightly flared leg opening.
Variants
8 SKUs| SKU | Title | Price | Avail |
|---|---|---|---|
| 4796439 | Micro-Perforated Built-In Brief Slit Short - Black - Small | CA$90.00 | Yes |
| 4796440 | Micro-Perforated Built-In Brief Slit Short - Black - Medium | CA$90.00 | Yes |
| 4796441 | Micro-Perforated Built-In Brief Slit Short - Black - Large | CA$90.00 | Yes |
| 4796442 | Micro-Perforated Built-In Brief Slit Short - Black - X-Large | CA$90.00 | Yes |
| 4799468 | Micro-Perforated Built-In Brief Slit Short - Grey - Small | CA$90.00 | Yes |
| 4799469 | Micro-Perforated Built-In Brief Slit Short - Grey - Medium | CA$90.00 | Yes |
| 4799470 | Micro-Perforated Built-In Brief Slit Short - Grey - Large | CA$90.00 | Yes |
| 4799471 | Micro-Perforated Built-In Brief Slit Short - Grey - X-Large | CA$90.00 | Yes |