Kryptonics Starter 4-in-1 Pad Set with Helmet, Small/Medium Protective 4-item set that includes knee, elbow, and wrist pads as well as a helmet for children Injection molded plastic pads with polyester fabric provide shock dissipation and softens impact of falls Pads are easy to take on and off with elasticized nylon straps and high impact buckles, and wick away moisture for superior comfort Helmet contains absorbing foam liner and high-impact outer shell for added protection Recommended for ages 5-9 years - helmet fits head circumference of 20-22 in.