The belt is made from 3mm thick and 40mm wide black heavy rubber.
Sizing:
To get the best fit, measure around your waist or the level that you have your belt sit in Inches rounding up to the closest inch.
Alternatively you can measure a belt that you already have, by measuring from the end of the buckle to the hole that you use.
If you order a 36inch belt the last hole will be at 36 inches we reconmend that you select a size that will give you some extra room e.g If you have a 36 inch waist order a 38 inch belt