Features Built for Safety High-strength PVC shell and EPS foam provide impact resistance, 11 vents keep kids cool, and it meets ASTM 1447 & CPSC 1203 safety standards. Cool & Protective Design Washable lining keeps kids fresh and comfortable, while EPS foam absorbs and disperses impact to help reduce the risk of head injuries. Comfortable Straps, Secure Fit The helmet features gentle straps and a quick-release buckle for a secure, customized fit. Lightweight & Comfortable Available in S (49–53 cm, 250 g) and M (54–58 cm, 290 g), this helmet features an adjustable dial for a secure fit, suits different head sizes, and is recommended for ages 1+. Fun Designs & Playful Style Multiple cute patterns with soft silicone horns bring the helmet to life. Perfect for cycling, scootering, skateboarding, and roller skating.