Jetpilot Vault Race Helmet - BlackJetpilot Vault Race Helmet The Vault is built for the moment you actually need it a high speed get off where every joule of impact energy matters. Conehead Technology is the difference: cones in the inner foam layer compress laterally on impact, spreading force sideways through the higher density outer shell instead of straight into your head. The result is a measurably lower G load and a lighter helmet, because Jetpilot has engineered softer foam