Sizing is specific to each product. Please check the product images and description for sizing on the item you are looking for.
Leggings - In general, you should Go Up One Size. For reference, our model has a 27" waist and 40" hips. She prefers a Large in all of our leggings because of her backside. If you have lean legs, you can choose your normal size or go one size up.
Sports Bras - These are True to Size. If you want a comfort fit that's still snug you can Go Up One Size.
Men's Shorts and Joggers - Go up one size for a snug, sport fit. Go up two sizes for a comfort fit. If you usually wear a Medium in US/UK Sizing, you should go up 1-2 sizes.
In general, the sizes listed are 1-2 sizes smaller than the US/UK sizing. If you normally wear a US Small, you may need a medium or large for these products.