You can find a size guide for the relevant brand on every product page - look for 'Find my size' below the price. Size guides on SportPursuit come directly from the brand you are browsing, so this will give you the best idea of what size is right for you. As every sporting brand is different, sizes can vary considerably for every brand.We typically quote the size on the product page as it appears on the garment. It's worth remembering that sizes differ depending on the country of origin (i.e. a UK size 10 is a US size 6!).If for any reason the item doesn't fit, you can return it back to us within 30 days of receipt. You can see a full returns policy here for more details.