How SAILBEE sizing works
Our sizes run 1–2 sizes smaller than US sizing. Pick your size by weight and height — not the letter you usually wear. If a US L usually fits you, you will most likely need our XXL–XXXL.
SAILBEE swimwear is cut with an Asian fit — a slimmer, athletic cut with narrower shoulders and a shorter torso than typical US swimwear. That's the design, not a defect; the charts below tell you exactly which size matches your body.
Between two rows? Take the larger size. Still unsure? Email jun@sailbee.cn with your height and weight and we'll pick for you.
Men's swimwear & rashguards
| SAILBEE size | Weight (lb) | Weight (kg) | Height (ft/in) | Height (cm) | Approx. US size |
|---|---|---|---|---|---|
| M | 121–141 lb | 55–64 kg | 5'3"–5'9" | 160–175 cm | ≈ US XS–S |
| L | 132–148 lb | 60–67 kg | 5'5"–5'11" | 165–180 cm | ≈ US S |
| XL | 148–165 lb | 67–75 kg | 5'7"–6'1" | 170–185 cm | ≈ US S–M |
| XXL | 163–176 lb | 74–80 kg | 5'7"–6'1" | 170–185 cm | ≈ US M |
| XXXL | 176–198 lb | 80–90 kg | 5'9"–6'3" | 175–190 cm | ≈ US L |
| 4XL | 196–243 lb | 89–110 kg | 5'9"–6'5" | 175–195 cm | ≈ US XL–2XL |
US equivalents are approximate. Applies to most men's rash guards and sets; a few styles carry their own chart on the product page — the product-page chart always wins.
Women's swimwear & rashguards
Same rule: go by the measurements, not the letter. Many women's styles (like our SB-904 rash guard) carry a US-localized chart in inches and pounds right on the product page — check there first.
Chart shown in cm/kg: 1 kg ≈ 2.2 lb, 1 cm ≈ 0.39 in. As a quick guide, a US women's 10–12 usually maps to our L–XL.
Kids
How to measure yourself
Use a soft tape measure over your underwear (or a thin t-shirt, if you don't have one).
- Chest / bust: around the fullest part, under the armpits, tape parallel to the floor.
- Waist: at your natural waistline (usually just above the belly button — bend sideways and the crease is your waistline).
- Hip: around the widest part of your hips and seat, tape parallel to the floor.
- Shoulder (rashguards): point-to-point across the back, from one shoulder edge to the other.
- Inseam (men's trunks): from the crotch seam straight down to the hem.
Still not sure?
Email jun@sailbee.cn with your height, weight, and the product you're looking at — we'll recommend a size. Fit is what we do; we're happy to help.
Returns & exchanges
If the fit doesn't work, email us within 30 days and we'll issue store credit for the full purchase price — no return shipping required for most pieces. See our return policy for the details.