Sierra Says: Protect your most important investment. Your kids. The Boeri Youth Element helmet is all you need. Keeping it real, while keeping it safe.

Sierra says: The Stinger has one shell size but is able to adjust sizes from year to year. With the new dial system and passive ventilation you are able to customize your little ones helmet with the twist of a dial. Boeri says: Available in two adjustable sizes, the Stinger is every parents dream come true! With the new Dial system, the Stinger encompasses 4 sizes in the Small, and 3 sizes i...