Flat-Angle Sports Vest One-Piece Swimsuit
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Sporty Confidence with Streamlined Support
The Flat-Angle Sports Vest One-Piece Swimsuit combines athletic structure with a sleek, modern silhouette for confident performance in and out of the water. The vest-style upper offers balanced support, while the flat-angle cut enhances comfort and mobility for active swim days.
Designed for movement and durability, this one-piece swimsuit provides a secure fit that feels streamlined and flattering. Whether for swimming laps, beach activities, or relaxed poolside wear, it delivers both sporty appeal and dependable comfort.
Why you’ll love it
Sports Vest Design: Offers structured upper support with a clean, athletic look that feels secure and stylish.
Flat-Angle Cut: Enhances mobility and comfort while maintaining a smooth and streamlined silhouette.
One-Piece Construction: Creates a cohesive and supportive fit that stays in place during activity.
Comfort-Focused Fit: Designed to allow natural movement for swimming and water-based activities.
Active Performance Style: Ideal for swim training, beach sports, or confident poolside wear.
Flattering Athletic Shape: Balances structure and flexibility for a sleek, confident appearance.
Secure Wear: Provides dependable coverage and support for worry-free movement.
Modern Sport Appeal: Blends functional design with contemporary style for a versatile swim look.
A streamlined and supportive swimsuit designed for active comfort, confident performance, and sporty elegance.
Use the fit finder next to the size selector for a recommendation in a few seconds, or see the full measurement charts below.
Every product page has a fit finder next to the size selector — three questions, one recommendation, a few seconds. These charts are for anyone who would rather read the numbers.
How to measure
- Bust / chest. Around the fullest part, tape level, arms relaxed at your sides.
- Waist. Around the narrowest part of your torso, usually just above the navel.
- Hips. Around the fullest part, roughly 8 in below the waist.
- Inseam. From the crotch seam to the floor, in the shoes you'll wear the trousers with.
Measure over the underwear you'd normally wear, not over clothing. Keep the tape snug but not tight.
Women's clothing
| Size | US | Bust (in) | Waist (in) | Hips (in) |
|---|---|---|---|---|
| XXS | 0–2 | 31–32 | 24–25 | 34–35 |
| XS | 2–4 | 33–34 | 26–27 | 36–37 |
| S | 4–6 | 35–36 | 28–29 | 38–39 |
| M | 8–10 | 37–38½ | 30–31½ | 40–41½ |
| L | 12–14 | 39½–41 | 32½–34 | 42½–44 |
| XL | 16–18 | 42–44 | 35–37 | 45–47 |
| XXL | 20–22 | 45–47 | 38–40 | 48–50 |
Men's clothing
| Size | Chest (in) | Waist (in) | Neck (in) |
|---|---|---|---|
| XS | 33–35 | 27–29 | 14–14½ |
| S | 36–38 | 30–32 | 15–15½ |
| M | 39–41 | 33–35 | 15½–16 |
| L | 42–44 | 36–38 | 16½–17 |
| XL | 45–47 | 39–41 | 17½–18 |
| XXL | 48–50 | 42–44 | 18½–19 |
Women's shoes
| US | EU | UK | Foot length (in) |
|---|---|---|---|
| 5 | 35 | 2½ | 8⅝ |
| 6 | 36 | 3½ | 8⅞ |
| 7 | 37–38 | 4½ | 9¼ |
| 8 | 38–39 | 5½ | 9½ |
| 9 | 39–40 | 6½ | 9⅞ |
| 10 | 41 | 7½ | 10¼ |
| 11 | 42 | 8½ | 10½ |
Men's shoes
| US | EU | UK | Foot length (in) |
|---|---|---|---|
| 7 | 40 | 6 | 9⅝ |
| 8 | 41 | 7 | 9⅞ |
| 9 | 42 | 8 | 10¼ |
| 10 | 43 | 9 | 10⅝ |
| 11 | 44 | 10 | 10⅞ |
| 12 | 45 | 11 | 11¼ |
| 13 | 46 | 12 | 11½ |
How our pieces are cut
- Dresses are cut true to size. If you are between sizes, take the smaller one — most of our dresses have ease through the waist.
- Coats and jackets are cut with room for a knit underneath. Take your usual size; size up only if you layer heavily.
- Knitwear is relaxed by design. Between sizes, take the smaller one unless you want an oversized look.
- Trousers and jeans run true to size. Between sizes, take the larger one.
- Shoes run true to size. If you have a wide foot, take half a size up.
Still not sure?
Write to info@halstead.com with your usual size, your height and the piece you're looking at. We'll tell you what we would pick — usually within a few hours. We would far rather get it right the first time than process a return.
We work in natural fibres — wool, cashmere, cotton, linen and full-grain leather.
Knitwear: cold hand wash or a wool cycle at 30 °C, no softener, dried flat and stored folded.
Coats: dry clean once or twice a season, stored on a broad wooden hanger.
Leather: wipe with a damp cloth, condition twice a year, never dry near heat.
Full guidance is on our Materials & Care page.
Shipping is free on every order to all 50 states, with no minimum.
Processing: 2–4 business days, while your order is picked and checked by hand.
Transit: 3–4 business days.
Total: 6–9 business days, with tracking emailed the moment it leaves Chesapeake.
Returns: 90 days from delivery. We email you a printable label; return shipping is deducted from the refund unless the fault is ours, and your first exchange is always free.