Fit kits are a great tool to find out which size fits your horse the best. We offer fit kit shells to our clients for a deposit of $10. If you buy a pair of EVO boots with us, we will reemburse/deduct the deposit as soon as we get the kit back. If you do not order boots from us, we will only return 50% of the deposit. Order the size of shell you think will fit best, plus one size above and one below. Check our sizing chart or contact us, so we can help you to find the correct size. Please don't damage the shells and return them in clean condition, within 5 days of receiving them. Understand that we only have a limmited amount of fit kits and other people need them as well. If you need more time please contact us to see if you can keep your shells longer. If they return late (without notice) or dirty, we will charge you a $5 fee per kit. If a shell is returned damaged, we will not refund your deposit of that shell. Note: you will be responsible for returning the Fit Kit to us at your cost, and we are not able to refund you until the Fit Kit is received by us, so we do recommend a recorded method of postage. (USPS flat rate) If wont get the fit kit back at all, we will send you an invoice of $25 per shell, within 3 weeks of our shipping date. Be aware that even we keep them clean, this shells go from one horse to another. We will not take any responsiblity for contamination or harm caused by this fit kits. If any of the shells has any damage to it when we send it to you, we will mark it with a sticker. Please do not remove it.