Size guide

Find your size

Measure around your waist, then pick the size whose range includes your measurement. The recommended weight is there to help you choose if you're unsure.

UK sizes

Size	Waist	Recommended weight
XS	25½–29 in	6½–8 st
S	29–32 in	8–9½ st
M	32–34½ in	9½–11 st
L	34½–40 in	11–12½ st
XL	40–44 in	12½–14 st

US sizes

Size	Waist	Recommended weight
XS	25.5–29 in	88–110 lbs
S	29–32 in	110–132 lbs
M	32–34.5 in	132–154 lbs
L	34.5–40 in	154–176 lbs
XL	40–44 in	176–198 lbs

Not the right size?

With our 30-day Perfect Fit Guarantee, if your tank doesn't fit the way you hoped, we'll help you swap it for the right size. See our Returns and exchanges policy.