Because one size won't fit all genders, here's a guide to help you make your mind.
For Men - If you're usually between two sizes, we suggest you pick the larger one.
For Women - To double check you picked the right size: measure your hips size with a measuring tape, then divide it by 2. Using the table below, make sure your value is at least 4cm smaller when compared to the "HIPS" value.
If you're still not sure, we really encourage you to order different sizes to try at home.
If you live in the UK, you can choose "Pay Later" at checkout and only pay 30 days later for what you keep.