UPDATED SIZING CHART - PLEASE MAKE SURE TO MEASURE YOUR FEET USING OUR SIZING CHART IMAGE TO GET YOUR PERFECT SIZE. XXS size is suitable for youth age 8-12 years old and NOT suitable for children under 8 years old. Wash or rinse the swimming fins for kids after use, especially when used in chlorinated pool, to avoid them from breaking. Also put them in fin pads when not in use to keep them in and excellent condition..NO MORE INJURIES WITH ANKLE SECURE DESIGN – Our training swimming flippers come with ankle secure design supports and protects swimmers from any injuries when doing watersports as they provide added comfort even for when you encounter the occasional winter-ocean currents. The kid flippers have 8.6" foot length, 3.7" ankle length, 2.5" ankle width..FIRM GRIP WITH EVERY MOVE - Our kids water fins use elastic thermoplastic rubber and PP material. It provides firm grip as you walk with it, comfort and secures for long swimming sessions. These are perfect to give your kids a boost in speed and give them confidence for more advanced skills. If you feel ANY discomfort while using these rubber flippers for swimming kids, feel free to return it to us and get your FULL refund!.MAXIMUM SAFETY AND COMFORT - These are great for little kids just learning how to use fins. These children's flippers come with orthopedic foot pocket design which offers maximum control and comfort. It helps swimmers to swim properly without having a muscle strain. These lightweight flippers for boys and girls are super light and don't take up much space, super easy for kids to use and don't hurt their feet at all. Perfect for swimming, diving, snorkeling, and other watersports!.GET YOUR KIDS TO SWIM RIGHT AWAY! - Provide maximum comfort, control, and protection with our training flippers. Recommended for kids who are learning to swim on their own (or with flotation) and those who already swim as they provide that little extra oomph to get them and keep them moving! Take this great offer before it's over with click Add to Cart button above!