SIZE GUIDE
Foam Theory
All measurements in inches. Measure over bare skin with a soft measuring tape. In between sizes? Size down for a closer, more lifted fit, or size up for fuller coverage. If you're in between sizes, size up.
Swimwear Tops
| Size | US | UK | Bust (in) | Cup Size |
|---|---|---|---|---|
| XS | 0–2 | 2–4 | 28–30 | A |
| S | 2–4 | 4–6 | 31–33 | B–C |
| M | 6–8 | 8–10 | 34–36 | C–D |
| L | 8–10 | 10–12 | 37–39 | DD |
| XL | 10–12 | 14–16 | 40–42 | DDD |
Swimwear Bottoms
| Size | US | UK | Waist (in) | Hips (in) |
|---|---|---|---|---|
| XS | 0–2 | 2–4 | 22–24 | 31–33 |
| S | 2–4 | 4–6 | 25–27 | 34–36 |
| M | 6–8 | 8–10 | 28–30 | 37–39 |
| L | 8–10 | 10–12 | 31–33 | 40–42 |
| XL | 10–12 | 14–16 | 34–36 | 43–45 |
How to Measure
| Measurement | How |
|---|---|
| Bust | Wrap the tape around the fullest part of your chest, parallel to the ground. Breathe naturally, don't pull too tight. |
| Waist | Measure the narrowest part of your waist, just above the belly button. |
| Hips | Wrap the tape around the fullest part of your hips and seat, keeping it parallel to the ground. |
Between sizes? Size up for the top, size down for the bottom. Our fabric is a four-way stretch that moves with you.
Still unsure? We're here at hello@foamtheoryswim.com