Our tanks are sized on your bust, not on the bra size you normally buy. There are no cups and no band, so the usual 36C or 40DD numbers don't apply here. Measure once and use the table below.
How to measure your bust
Wear a normal bra or nothing at all. Run a tape measure around the fullest part of your bust, keep it level across your back, and let it sit snug but not tight. Breathe out and read the number.
Tank size by bust
| Size | Bust (inches) | Bust (cm) |
|---|---|---|
| S | Up to 33" | Up to 84 cm |
| M | 33" – 35" | 84 – 89 cm |
| L | 35" – 38" | 89 – 97 cm |
| XL | 38" – 40" | 97 – 102 cm |
| 2XL | 40" – 42" | 102 – 107 cm |
| 3XL | 42" – 45" | 107 – 114 cm |
| 4XL | 45" – 47" | 114 – 119 cm |
| 5XL | 47" – 50" | 119 – 127 cm |
| 6XL | 50" and up | 127 cm and up |
No tape measure? Use your weight
It's less precise than the bust measurement, so use it only as a fallback.
| Size | Weight (lb) | Weight (kg) |
|---|---|---|
| S | 66 – 88 lb | 30 – 40 kg |
| M | 88 – 110 lb | 40 – 50 kg |
| L | 110 – 132 lb | 50 – 60 kg |
| XL | 132 – 154 lb | 60 – 70 kg |
| 2XL | 154 – 176 lb | 70 – 80 kg |
| 3XL | 176 – 198 lb | 80 – 90 kg |
| 4XL | 198 – 220 lb | 90 – 100 kg |
| 5XL | 220 – 243 lb | 100 – 110 kg |
| 6XL | 243 – 265 lb | 110 – 120 kg |
Briefs and underwear
Our briefs are sized on your waist and hips, not your bust, so your brief size can differ from your tank size.
| Size | Waist (in) | Waist (cm) | Hips (in) | Hips (cm) |
|---|---|---|---|---|
| S | 27.2 – 28.7 | 69 – 73 | 35.8 – 37.8 | 91 – 96 |
| M | 29.1 – 31.1 | 74 – 79 | 38.2 – 40.2 | 97 – 102 |
| L | 31.5 – 33.5 | 80 – 85 | 40.6 – 42.5 | 103 – 108 |
| XL | 33.9 – 35.8 | 86 – 91 | 42.9 – 44.9 | 109 – 114 |
| 2XL | 36.2 – 38.2 | 92 – 97 | 45.3 – 47.2 | 115 – 120 |
Our briefs are made up to 2XL. If you're above that, email Support@susies.co with your waist and hip measurement and we'll tell you what we can do.
Still not sure?
Order the size the table gives you. If it's wrong when it arrives, we swap it for free within 90 days under the Perfect Fit Guarantee. Or just ask us first at Support@susies.co and we'll tell you which size to take.