SIZE:S=38-39 M=40-41 L=42-44Product details of Skates for Adults, Otw-Cool Rollerblades, Safe and Durable inline roller skates for Girls and Boys, Men and Ladies SAFETY AND FUN - we care about safety and comfort of our products; we offer these adjustable inline skates with all illuminatingThey are fun and engaging for the kids! COMFORT - Great ankle support with soft, comfortable padding, perfect fit for those young, growing feet; high quality, durable aluminum frame ILLUMINATING WHEELS - 70 mm 82A polyurethane wheels with high performance ABEC-7 bearings ensure a smooth and comfortable ride, NO BATTERIES NEEDED!