Small: 52-54cm
Medium: 55-57cm
Large: 58-60cm
Bell's Sanction is a low-profile, lightweight, full-face lid that's perfect for hard-charging BMX and mountain riders. It boasts a hand-laminated fiberglass shell for toughness along with plush padding and an adjustable retention harness for a comfy, secure fit even when speeds are high. There are 15 vents to keep you dry, and a fully adjustable visor to shield your eyes.