Orca Core One Piece Thin Strap Women Swimsuit
£39.00
A clean, compressive one-piece from Orca designed for regular pool and open water use. The Core thin strap swimsuit is built from a chlorine-resistant 78% polyamide/22% elastane fabric that holds its shape and performance wash after wash, with 80% of the materials GRS-certified recycled. Straightforward fit, genuine durability, and a brand that knows water — available in Black, Blue, and Deep Blue/Blue Sky.
Key Features
- Compressive Fabric — Close-fitting polyamide/elastane construction provides support and a streamlined profile in the water
- Chlorine Resistance — Fabric formulated for higher durability against pool chlorine; retains shape and properties with correct post-swim care
- 80% Recycled Materials — GRS-certified recycled content throughout, verified to Global Recycled Standard
- Thin Strap Design — Clean silhouette with minimal strap coverage for unrestricted shoulder movement
- Pool and Open Water Suitable — Performs across training environments from lane swimming to open water sessions
- 78% Polyamide / 22% Elastane — Published fabric composition for reference
Description
Orca Core One Piece Thin Strap Swimsuit: Built for the Pool, Ready for Open Water
Not every training session calls for race-specific kit. The Orca Core One Piece is a workhorse swimsuit designed for swimmers and triathletes who want a reliable, well-fitting one-piece that holds up to regular pool sessions without the price tag of a competition suit. Orca bring the same material standards and fit philosophy to the Core range that they apply across their wetsuit and trisuit lines — the result is a swimsuit that performs noticeably better than the price suggests.
The compressive polyamide/elastane fabric sits close to the body for a streamlined profile in the water, reduces drag without restricting movement, and provides the kind of support that looser recreational swimwear doesn’t. For swimmers training at volume, or triathletes wanting a consistent suit for pool sessions through to open water acclimatisation, the Core One Piece is a practical, durable choice.
Chlorine Resistance and Longevity
Pool chlorine is hard on swimwear fabric — it breaks down elasticity over time, causing suits to lose shape, colour, and performance properties. The Core One Piece uses a fabric formulated specifically for higher chlorine resistance, meaning the compressive properties and fit are retained for longer with appropriate post-swim care. For anyone swimming regularly, the durability difference between a standard swimsuit fabric and a chlorine-resistant one is significant over a season.
Recycled Construction
The Core One Piece is made with 80% recycled materials, independently verified to Global Recycled Standard (GRS) certification. This applies to both the main fabric and the construction — not just a token percentage. The fabric composition is 78% polyamide (nylon) and 22% elastane (spandex), delivering the stretch and compression needed for swim performance from a largely recycled material base.
Fit Note
The fabric’s compressive properties mean the suit fits closely. Orca advise sizing up if you are between sizes — this is standard for compressive swimwear and worth factoring in if you are on the boundary of two sizes.
Free Delivery
On orders over £50
Free returns
Extended return period of 21 days
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Choosing a size
Wetsuits are tricky to size correctly & can vary between manufacturer, so if you’re in any doubt, we are here to help. If you're local, we recommend popping in to see us and we are confident we will find the right wetsuit for you.
Find Your Perfect Fit
Wetsuit Sizing
| Size | Chest | Height | Weight |
|---|---|---|---|
| 4 | 85-91 | 157-170 | 55-61 |
| 5 | 90-95 | 162-172 | 61-66 |
| 6 | 95-99 | 167-172 | 67-74 |
| MT(6T) | 95-99 | 177-188 | 68-76 |
| 7 | 98-104 | 173-185 | 75-82 |
| 8 | 104-108 | 180-188 | 82-89 |
| 9 | 108-113 | 185-193 | 89-97 |
| 10 | 114-124 | 190-196 | 98-106 |
| 11 | 123-134 | 193-200 | 107+ |
| Size | Chest | Height | Weight |
|---|---|---|---|
| 4 | 33 - 36 | 5/2 - 5/7 | 121-134 |
| 5 | 35 - 37 | 5/4 - 5/8 | 134 - 145 |
| 6 | 37 - 39 | 5/6 - 5/9 | 147 - 162 |
| MT (6T) | 37 - 39 | 5/10 - 6/2 | 149 - 167 |
| 7 | 38 - 41 | 5/8 - 6/1 | 165 - 180 |
| 8 | 41 - 43 | 5/11 - 6/2 | 180 - 196 |
| 9 | 43 - 44 | 6/1 - 6/4 | 196 - 213 |
| 10 | 45 - 49 | 6/3 - 6/5 | 215 - 233 |
| 11 | 49 - 53 | 6/4 - 6/6 | 235 + |
| Size | Chest | Height | Weight |
|---|---|---|---|
| XS | 78 - 83 | 144 - 160 | 46 - 54 |
| XST | 79 - 85 | 157 - 167 | 53 - 60 |
| S | 83 - 89 | 157 - 167 | 54 - 61 |
| ST | 83 - 89 | 169 - 183 | 58 - 65 |
| M | 89 - 94 | 165 - 177 | 60 - 77 |
| MW | 107 - 113 | 165 - 177 | 86 - 98 |
| L | 94 - 99 | 170 - 185 | 66 - 74 |
| LW | 119 - 125 | 170 - 185 | 95 - 117 |
| XL | 99 - 104 | 177 - 189 | 73 - 79 |
| Size | Chest | Height | Weight |
|---|---|---|---|
| XS | 31 - 33 | 4/9 - 5/3 | 101 - 116 |
| XST | 31 - 34 | 5/3 – 5/6 | 116 – 132 |
| S | 33 – 35 | 5/3 – 5/6 | 118 – 134 |
| ST | 33 – 35 | 5/6 – 6/0 | 127 – 143 |
| M | 35 – 37 | 5/5 – 5/10 | 132 – 147 |
| MW | 42 – 44 | 5/5 – 5/10 | 189 – 216 |
| L | 37 – 39 | 5/8 – 6/1 | 145 – 163 |
| LW | 46 – 49 | 5/8 – 6/1 | 209 – 258 |
| XL | 39 – 41 | 5/10 – 6/2 | 160 – 173 |
Is the Orca Core One Piece suitable for open water swimming as well as the pool?
Yes — it works across both environments. The compressive, close-fitting fabric is effective in open water as well as pool lane swimming. For cold open water sessions most swimmers will want a wetsuit over the top, but the Core One Piece is a solid base layer and a capable suit on its own in warmer conditions.
What does chlorine resistance actually mean in practice?
Pool chlorine gradually degrades swimwear fabric, causing it to lose stretch, shape, and colour faster than the suit should. A chlorine-resistant fabric is formulated to slow this breakdown significantly. With proper post-swim care — rinsing in cold fresh water and air drying away from direct heat — a chlorine-resistant suit will outlast a standard swimwear fabric by a meaningful margin, especially for swimmers training multiple times per week.
What does GRS-certified recycled mean?
GRS stands for Global Recycled Standard — an independent certification that verifies the recycled content claim throughout the supply chain. 80% GRS-certified recycled means the recycled material content has been independently verified, rather than being an unsubstantiated marketing claim.
How should I size the Core One Piece?
The fabric is compressive, so the suit fits closely. If you’re between sizes, Orca advise going up to the larger size. If you’d prefer to talk it through, give us a call on 01362 690069.
How should I care for the swimsuit after use?
Rinse thoroughly in cold fresh water after every swim — both pool and open water — to remove chlorine, salt, and other residues. Do not machine wash, tumble dry, or dry in direct sunlight. Air dry flat or hanging. These steps are important for maintaining the chlorine-resistant properties and the compressive fit over time.
Is this suit suitable for triathlon racing?
It can be worn for a triathlon swim leg, but it’s designed primarily as a training and recreational swimsuit rather than a race-specific trisuit. If you’re looking for a suit that covers all three disciplines with a chamois pad and race pockets, the Zone3 Activate+ or Orca’s trisuit range would be more appropriate.
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