Monofin Included adult L purple Kids Wear-resistant For Swimming BEST-SELLING mermaid tails for swimming consistently receive TOP REVIEWS for being the most beautiful, safe, and comfortable mermaid tails in the worldNo need for tip protector tape when you have built-in armor to guard against damageExperience remarkable power as you glide through the water with our premium monofin that is easy to remove with a light tug and a kickENGINEERED for speed, comfort, and safety, all Monofins feature an ULTRA-DURABLE FIN and NEOPRENE COVER for natural movement in the water. Size Chart (1in=2.54cm) Kids Size Kids S: Waits 22-23in hips 24-25inLength 23-26in Kids M: Waits 23-24in hips 25-28inLength 26-29in Kids L: Waits 24-25in hips 28-30inLength 29-32in Kids XL: Waits 25-27in hips 30-32inLength 32-37in Adults Size Adults S: Waits 26-28in hips 35-37inLength 35-50in Adults M: Waits 28-30in hips 37-39inLength 35-50in Adults L: Waits 30-34in hips 39-41inLength 35-50in Adults XL: Waits 33-36in hips 42-45inLength 35-50in