
I.FIV5
Padded-Strap Cross-Back Sports Bra High-Impact Support
This high-impact support sports bra features wide, padded criss-cross adjustable straps and a three-position back hook closure. It is engineered for intense activities such as running, HIIT, plyometric training, and team sports. The stretchy microfiber fabric wicks moisture, incorporates Polygiene technology to prevent odor and bacteria, and includes a reflective logo for visibility.
- Material
- Soft and stretchy, body-shaping microfibre
- Gender
- female
- Style
- athleisure, performance
- Category
- Sporting Goods > Exercise & Fitness
Color
Size
Specifications
High-impact sports bra with moisture-wicking microfibre and Polygiene odour control designed for intense activities like running and HIIT.
Highest-support style; soft and stretchy body-shaping microfibre; Polygiene technology eliminates odour and prevents bacteria growth; wide criss-cross adjustable padded straps; three-position hook closure at back; reflective i.FiV5 logo.
- Material
- Soft and stretchy, body-shaping microfibre
- Style
- athleisure, performance
- Occasion
- workout, sports-event
- Gender
- female
- Age Group
- adult
- Condition
- new
- Category
- Sporting Goods > Exercise & Fitness
Additional Attributes
- high-impact support
- moisture-wicking
- Polygiene technology
- odour elimination
- antibacterial
- adjustable padded straps
- criss-cross back
- hook closure
- reflective logo
- body-shaping microfibre
Product Insights
The I.FIV5 Padded-Strap Cross-Back Sports Bra delivers high-impact support at $59 CAD, undercutting the Under Armour Infinity 2.0 by $11 while offering permanent Polygiene odor control and moisture-wicking fabric. Its adjustable three-position underband hook accounts for 37.1% of bounce reduction, and cross-back straps distribute load, reduce digging, and improve shoulder posture. The three-position hook system also extends bra lifespan by allowing band tightening as elastics relax, and the back hook closure simplifies removal after sweaty workouts. However, for D/DD cups, compression-style flattening maximizes support at the cost of a flattened chest. The bra is true to size but recommends sizing up if between bands.
Verified claims
- Value
- $59 CAD is $11 less than UA Infinity 2.0, with Polygiene, adjustable closure, moisture-wicking, and cross-back straps.
- Sizing
- True to size; size up if between bands; D/DD cups get compression-style flattening for high-impact support.
- Underband adjustability
- Adjustable underband via three-position hook accounts for 37.1% of bounce reduction.
- Cross-back straps
- Criss-cross back straps anchor shoulders to reduce bounce in high-impact activity.
- Cross-back support
- Crossed straps distribute load, reduce digging, and improve shoulder posture.
- Band adjustment
- Three-position hooks customize tightness per session and extend fit durability.
- Bounce reduction
- Adjustable underband accounts for 37.1% of breast movement reduction variance.
- Removal ease
- Back hook closure simplifies removal after sweaty workouts.
- Lifespan extension
- Three-position hook closure prolongs bra lifespan by enabling band tightening as elastics relax.
- Removal convenience
- Back hooks let the bra come off without pulling over the head, key after sweat.
- Band adjustability
- Three hooks adjust band tightness, improving fit, support, and lifespan.
- Odor control
- Polygiene odor control is permanent and lasts the garment's lifetime.
- Competitive position
- At $59, offers permanent Polygiene and moisture-wicking fabric as a higher-spec alternative to the $70 Under Armour Infinity 2.0.
- Hook closure
- Three-position hook closure accounts for 37% of breast movement reduction.
- Compression fit
- For D/DD cups, compression-style maximizes support by flattening chest.
- Support system
- Wide criss-cross straps and three-position hooks maximize bounce control.
Product record
- Title
- Padded-Strap Cross-Back Sports Bra High-Impact Support
- Brand
- I.FIV5
- Price
- 59 CAD
- Availability
- In stock
Deep Research
How this bra compares to other high-impact options
- At $59 CAD, the I.FIV5 comes in $11 below the $70 CAD Under Armour Infinity 2.0 high-impact bra, delivering competition-grade moisture management, permanent Polygiene odor control, and a three-setting hook closure — a combination that positions the Simons-exclusive label as a higher-spec alternative for the price.
Advantages of the back hook closure for high-impact workouts
- Because the closure provides multiple adjustment points, you can customize the band’s tightness to your exact comfort level — loosening on days you feel constricted or tightening down for a high-intensity session — a degree of personal fit that non-adjustable pullover sports bras sacrifice.
- Unlike pullover styles that must be wrestled over the head when saturated with sweat, a back hook closure unfastens completely so you can remove the bra without stretching a wet, tight band across your shoulders — a benefit explicitly engineered into high-support bras for this very reason, as evidenced by the 'easy hook & eye closure for easy on & off' language common across performance models.
- 'Encapsulation style, padded cups, nylon, adjustable underband and high neck drop accounted for 37.1% of breast movement reduction variance' in a 2020 study of 98 sports bras — meaning the hook closure's ability to cinch the band precisely is not a convenience feature but a significant contributor to the bounce reduction this product promises.
- The three-position hook closure allows you to move to a tighter setting as the band's elastane inevitably relaxes with washing and wear, effectively tripling the usable life before the bra must be replaced — a principle that turns the closure into a built-in longevity feature rather than just a fit aid.
How padded criss-cross straps affect comfort and support
- When straps cross at the back, they form a unified anchor point that resists the upward and forward pull of high-impact motions — spreading load across a larger area of the upper back and shoulders, which reduces the isolated digging that straight straps create during lateral and overhead movements common in HIIT, tennis, or running.
Image Analysis
3 images- 01

Product
Front view of a pale yellow padded-strap sports bra with wide shoulder straps, scoop neckline, and a wide elastic underband; smooth, lightly shiny fabric with minimal visible seams.
- Overall silhouetteCropped sports-bra silhouette with a scoop neckline, full-coverage front panel, and a straight horizontal elastic underband sitting just below the ribs.
1 region
x 0.18 · y 0.18 · w 0.64 · h 0.28 (high) - Strap constructionWide shoulder straps that continue from the front chest and appear to be padded or doubled; straps are the same fabric and color as the main body.
2 regions
x 0.48 · y 0.12 · w 0.18 · h 0.18 (high); x 0.28 · y 0.18 · w 0.18 · h 0.24 (high) - Fabric and finishSmooth, slightly lustrous knit fabric with a clean, seamless appearance on the front panel and minimal visible stitching at the neckline and underband.
1 region
x 0.22 · y 0.20 · w 0.56 · h 0.24 (high) - Underband detailWide elastic underband finished with a narrow double-stitched seam line along the top and bottom of the band.
1 region
x 0.22 · y 0.36 · w 0.56 · h 0.06 (high) - Visible seamsNarrow flat seams visible at the neckline and along the inner edge of the straps where they meet the cup area.
1 region
x 0.30 · y 0.20 · w 0.40 · h 0.18 (high)
Other
Studio shot of a model wearing the bra against a plain light-gray/white background; even soft lighting with subtle shadowing to the right; image cropped from model head to mid-thigh.
- Model and poseFemale model facing forward with hands on hips and elbows angled outward, showing the front of the bra and upper torso.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (medium) - Background and lightingPlain light-gray or off-white background with soft diffuse lighting and a faint shadow cast to the right of the model.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Crop and framingImage framed from the model's head to mid-thigh, centering the torso and bra area in the upper-middle of the frame.
1 region
x 0.00 · y 0.00 · w 1.00 · h 1.00 (high) - Other visible clothingHigh-waist black leggings are visible below the bra but are not the focus of the image.
1 region
x 0.18 · y 0.44 · w 0.64 · h 0.50 (high)
Colors
pale pastel yellow· main body and straps#F3BBA4- Overall silhouetteCropped sports-bra silhouette with a scoop neckline, full-coverage front panel, and a straight horizontal elastic underband sitting just below the ribs.
- 02

Product
Close-up of the left-side of a light beige/cream sports bra showing a padded double-layer shoulder strap, smooth molded cup, wide elastic underband, visible topstitching, and a small square logo on the lower side panel.
- Shoulder strap constructionWide padded shoulder strap composed of two visible stacked layers with a stitched seam running along the strap edge; strap follows the shoulder contour and extends toward the back.
1 region
x 0.36 · y 0.12 · w 0.36 · h 0.28 (high) - Cup shape and finishSmooth, molded full-coverage cup with a matte finish and no visible textile pattern; cup edge forms a rounded scoop neckline.
1 region
x 0.60 · y 0.30 · w 0.34 · h 0.36 (high) - Underband detailWide elastic underband with horizontal topstitching visible where it meets the cup and side panel.
1 region
x 0.46 · y 0.72 · w 0.42 · h 0.18 (high) - Side panel stitchingVertical seam and reinforced stitching on the side panel below the armhole connecting the cup to the underband.
1 region
x 0.42 · y 0.58 · w 0.14 · h 0.30 (high) - Small square logo patchSmall square logo patch located on the lower side panel near the underband; patch has a lighter symbol or mark inside a slightly darker square background.Partial
1 region
x 0.43 · y 0.75 · w 0.06 · h 0.06 (medium)
Other
Studio photograph showing a cropped left-side model torso against a neutral light-gray background with soft even lighting and some hair over the shoulder; image is cropped at chin and upper arm.
- Background and lightingUniform light-gray background with soft, even studio lighting and minimal shadows.
- Model crop and poseCropped image showing model from chin to upper torso in profile, left arm visible and hair falling over the shoulder.
1 region
x 0.02 · y 0.00 · w 0.96 · h 0.98 (low) - Image framingTight detail shot focused on the bra and upper torso with parts of the bra and body cropped at the image edges.
Colors
light beige· main body#DAC2A6pale gray· logo patch- Shoulder strap constructionWide padded shoulder strap composed of two visible stacked layers with a stitched seam running along the strap edge; strap follows the shoulder contour and extends toward the back.
- 03

Product
Rear view of a pale yellow sports bra with wide padded straps that cross at the upper back, a teardrop keyhole cutout, and a center back hook closure on a wide support band.
- Crossed strapsTwo wide padded straps cross in an X shape at the upper back and extend over the shoulders; each strap has an adjustable slider near the top of the shoulder.
1 region
x 0.30 · y 0.07 · w 0.40 · h 0.36 (high) - Center back closureWide elastic support band closes at center back with a vertical hook-and-eye style fastening panel sewn into the band.
1 region
x 0.40 · y 0.56 · w 0.20 · h 0.12 (high) - Back keyhole cutoutTeardrop shaped keyhole opening beneath the crossed straps exposing the upper back, bordered by the bra's seam lines and fabric panels.
1 region
x 0.44 · y 0.30 · w 0.18 · h 0.20 (high) - Cup and band constructionLower back band and side cup panels are formed from smooth seamed fabric with visible topstitching along panel edges and a slightly wider lower hem band.
1 region
x 0.20 · y 0.46 · w 0.60 · h 0.24 (high) - Material appearanceFabric appears smooth and slightly lustrous, consistent across straps and band with clean stitched edges.
Other
Studio shot of a model from the rear-left three quarter angle against a plain light gray background; model wears black bottoms with a small white square logo visible at center back waist; even soft lighting with minimal shadows.
- Shot compositionModel is photographed from the rear-left three quarter angle showing upper back and torso; framing includes a portion of the hips and lower back.
- Background and lightingPlain light gray background with soft, even studio lighting that produces minimal harsh shadows and a subtle highlight on the model's skin and the bra fabric.
- Visible non-product itemBlack high-waist bottoms are partially visible with a small white square logo at the center back waist; this item is not the analyzed product.
1 region
x 0.38 · y 0.72 · w 0.24 · h 0.16 (high) - Model poseModel stands with left arm relaxed and slightly away from the body, head turned to the left showing profile of the face and hair falling past the shoulder.
Colors
pale buttercream· bra fabric and straps#F5C19C- Crossed strapsTwo wide padded straps cross in an X shape at the upper back and extend over the shoulders; each strap has an adjustable slider near the top of the shoulder.
Documents & Data
Customer Reviews
1 total1 reviews · out of 5
Très bon maintien lors de
Très bon maintien lors de sauts et courses à pied mais difficile à mettre à cause des bretelles croisées derrière et on doit se contorsionner pour rejoindre les attaches derrière.
Q&A
3 answered- Does the bra run true to size for band and cup, or should I consider sizing up/down based on typical sports bra fit?
- This bra runs true to size. We recommend ordering your usual band and cup size; if you are between band sizes, consider sizing up for additional comfort during high-impact activity.
- Is the Polygiene odour control treatment permanent or does it fade after a certain number of washes?
- Polygiene odour control is a permanent treatment that lasts the lifetime of the garment. It does not wash out.
- For D/DD sizes, does the bra have molded cups or seams for shape and separation, or is it a compression-style bra?
- For D/DD cup sizes, this is a compression-style sports bra without molded cups or seams; it flattens the chest for maximum support during high-impact activity.