The Collection
Shop
FLAT.
FLAT.
Image coming soon
One Piece
The Wrap
A plunge neckline with an adjustable tie waist — designed to move with you.
- Plunge neckline with an adjustable tie waist
- Lightweight ruffle details that add effortless movement and feminine style
- Thoughtful coverage and support where it matters most
- Playful, vibrant prints designed to bring joy to every sunny adventure
FLAT.
Image coming soon
One Piece
The Halter
A modern halter designed specifically for flat bodies. Clean neckline with a flattering, secure fit—without cups, padding, or unnecessary structure.
- Designed specifically for flat chests
- No built-in cups
- No removable padding
- No underwire
- Double-lined construction
- Halter neckline
- One-piece silhouette
- Medium back coverage
- Premium stretch swim fabric
FLAT.
Image coming soon
One Piece
The Jumpsuit
Swimwear, reimagined. A modern, full-coverage swim silhouette designed specifically for flat bodies.
- Designed specifically for flat chests
- No built-in cups
- No removable padding
- No underwire
- Double-lined construction
- Streamlined, body-skimming silhouette
- Extended leg for added coverage
- Premium stretch swim fabric
- Designed for swim and beyond
Accessories
The Proud Cap — Identity
Pre-Order$48
A classic six-panel cap with a message that speaks for itself.
- Front: "FLAT. and proud" embroidered in bold white text
- Back: "Cancer took my breasts. Not my identity."
- Classic six-panel baseball cap construction
- Adjustable strap-back closure with metal buckle
- One size fits most
Accessories
The Proud Cap — Amputation
Pre-Order$48
A classic six-panel cap with a message that speaks for itself.
- Front: "FLAT. and proud" embroidered in bold white text
- Back: "My amputation was due to cancer."
- Classic six-panel baseball cap construction
- Adjustable strap-back closure with metal buckle
- One size fits most
Our Approach
Thoughtfully Tailored
for Flat Bodies
At FLAT., every piece is intentionally designed for women who have chosen aesthetic flat closure, gone flat after mastectomy, or simply prefer a smooth, natural silhouette. Traditional swimwear is built around breast volume and shaping. Ours is not.
Scar-Conscious Design
Healing looks different for everyone. Surgical scars, areas of tightness, and changes in sensation can make standard swimsuits uncomfortable. That's why our suits are thoughtfully constructed to prioritize comfort where it matters most.
- Soft, smooth linings that minimize irritation against sensitive skin.
- Carefully placed seams designed to avoid common scar areas whenever possible.
- Gentle stretch fabrics that move with your body without digging, pulling, or restricting.
- Supportive construction without compression, allowing you to feel secure while staying comfortable all day.
No Padding. No Inserts. No Pretending.
FLAT. is designed to celebrate your body — not disguise it. Our suits are intentionally:
Padding-free
Wire-free
Cup-free
Contouring-free
Without bulky inserts or molded cups, our pieces lay smoothly against the chest for a clean, modern silhouette that feels natural and effortless.
Designed for Confidence
Many women who go flat find themselves altering traditional swimwear, removing cups, or settling for styles that never quite fit. We believe you deserve better. Our approach provides:
- A streamlined fit designed specifically for flat chests.
- Coverage that stays in place while swimming, walking, and relaxing.
- Minimal, timeless styles that feel elegant rather than medical.
- Freedom from constant adjustments or unwanted shaping.
- The confidence to enjoy the beach, pool, and everyday moments exactly as you are.
Made for Real Bodies and Real Stories
Whether you're newly healed, years into survivorship, or simply seeking a swimsuit that reflects who you are today, FLAT. is committed to creating pieces that honor comfort, movement, and self-confidence.
No padding. No compromises. Just beautifully simple swimwear designed for you.
Fit Guide
Find Your Size
Our pieces are sized by band measurement — the circumference around your ribcage, just below where your breasts were. No cup size needed, ever.
How to Measure
Ribcage / Band
Wrap a soft measuring tape snugly around your ribcage, directly below your chest. Breathe naturally. This is your band measurement.
Waist
Measure around the narrowest part of your torso, typically 1–2 inches above your navel.
Hips
Measure around the fullest part of your hips and seat, keeping the tape parallel to the floor.
Size Chart (inches)
| Size | Ribcage / Band | Waist | Hips |
|---|---|---|---|
| XS | 28–30 | 24–26 | 34–36 |
| S | 30–32 | 26–28 | 36–38 |
| M | 32–34 | 28–30 | 38–40 |
| L | 34–37 | 30–33 | 40–43 |
| XL | 37–40 | 33–36 | 43–46 |
| XXL | 40–44 | 36–40 | 46–50 |
Between sizes? We recommend sizing up for the most comfortable fit, especially if you have any areas of post-surgical sensitivity.
FLAT.
