Can't use the air release button to fine-tune air pressures when used with Presta valves

comfortable listening

Besides a different lower tube

It can also be used to increase the range of standard doubles

With amazing grip

Bell Sanction Helmet - M - Matte Red - Black - AS-NZS�2063-2008 Standard Virtual Parent Can't use the air releaseThe Bell Sanction is a lightweight, low profile full face perfectly suited for those who want full face protection, without the bulk. At 850g it won't weigh you down. It features 15 vents to keep you cool and an adjustable visor to keep the sun out of your eyes. Who's this item for: Designed to be used for gravity focussed riding, the Sanction is perfect for DJ, Slopestyle, or shuttle days. Construction: It features an ABS plastic hardshell