The Shred Ready Sesh Water Helmet is a versatile helmet for all summer sports The ABS outer shell is built to protect against impact so you can skate wakeboard or kayak with confidence The Sesh Helmet has an occipital lock that hooks around the back of your head and a 4 point adjustable chin strap to keep your helmet securely in place Stainless steel hardware resists rusting for long lasting wear ABS outer shell protects against impact Hot Lock occipital strap keeps helmet in place 4 point adjustable chin strap lets you comfortable secure your helmet Stainless steel hardware resists rusing Size S 56 58 cm / M 58 59 cm / L 59 5 60 5cm