Solid Open-Back One-Piece

Verified claims

Sizing

Because the suit runs small, buyers size up 1–2 and Nike recommends size 36 for a size-34 sports bra.

Leg opening

Regular bikini cut yields moderate leg opening coverage.

Activity suitability

Buyers report good fit for gym swims and sauna when sized correctly.

Support

Soft, unpadded cups provide natural shaping but minimal support for D+ or active C-cup busts.

Chlorine resistance

51% recycled polyester body and polyester lining resist chlorine for 200+ hours.

Strap stability

Wide V-straps distribute tension and allow full shoulder mobility without adjustment.

Strap fit

Suit runs small; size up for straps to lay flat and feel comfortable.

Opacity

Full polyester lining keeps cups opaque when wet and after pool use.

Shaping

Unpadded cups provide natural shaping, but minimal support for C-cup and larger.

Care

Rinse immediately in cool water; press water out in a towel; air-dry flat; avoid softeners and dryers.

Fade resistance

Black color retains saturation for hundreds of pool hours.

Durability

All-polyester fabric lasts 200+ pool hours and resists fading from chlorine.

Shoulder mobility

Open back frees shoulder blades for rotation during freestyle and backstroke.

Product record

Title

Solid Open-Back One-Piece

Brand

Nike

Price

90 CAD

Availability

In stock

Support and shaping from unpadded cups

• The wide, non-adjustable V-straps are cut to spread tension across the upper back and sit flat without digging in, creating a steady anchor that helps the suit feel secure even when the soft cups offer no structural support.
• The soft cups are backed by a full polyester lining, so even without foam the fabric remains opaque when wet and provides a smooth, natural shape against the body, eliminating the transparency concerns that can accompany unpadded designs.

Wide V-strap comfort and stability

• The wide V-straps distribute tension across a broader area than narrow straps, which is the primary reason Nike claims they offer high support and a locked-in feel during active swimming — a design choice that directly compensates for the lack of adjustability by using width and stretch to keep the suit stable through flip turns and intervals.
• The open-back style with V-strap routing frees the shoulder blades for unencumbered rotation in freestyle and backstroke, while the strap width keeps the suit anchored across the upper back without restricting movement or cutting in.

Chlorine resistance and long-term durability

• Both the body and the lining are constructed from chlorine-resistant polyester (the lining is a 50% recycled / 50% virgin blend), so the entire suit resists pool chemicals — in high-friction areas like the bust and seat, this eliminates the weak link of a nylon liner that would degrade faster than the outer shell.
• The body fabric is 51% recycled polyester / 49% polyester with no spandex at all — spandex fibers typically break down within 50–75 hours of chlorinated pool use, so this polyester-only build can withstand over 200 hours without sagging, delivering a 3–4× longer lifespan than suits reliant on elastane blends.
• The 51% recycled polyester shares the same chlorine-resistant molecular structure as virgin polyester, so the sustainable fiber content does not compromise the suit’s ability to resist elasticity loss or structural degradation through months of lap swimming.

Performance and eco-benefits of recycled polyester

• Polyester holds dye deeply and resists fading from sun and chlorine significantly better than nylon, so the black color stays saturated and dark far longer — a full season of afternoon pool sessions won’t turn it gray or washed out.
• Polyester’s chlorine resistance comes from its molecular structure, not a surface treatment that fades with washing — unlike nylon or elastane blends that degrade in pool water, the polyester fibers in this suit stay stable through repeated chlorine exposure.
• Recycled polyester production emits up to 32% less carbon dioxide and requires 59% less energy than virgin polyester, so choosing a suit with a 51% recycled shell directly lightens the environmental load of your swim kit without a performance trade-off.
• Recycled polyester swimwear retains the same chlorine resistance, durability, and quick-drying properties as virgin polyester — the chlorine-proof, fast-drying behavior you expect from a training suit remains intact despite the shift to recycled content.
• Nike diverts an average of 1 billion plastic bottles from landfills and waterways each year to produce recycled polyester yarns — the fiber in this swimsuit is part of that massive closed-loop infrastructure, which has been scaling since 2020.