Designed for all-mountain pursuits, the new Tenet™ features Giro's hybrid construction to deliver the lightness of the in-molded lower and the durability of the hard-shell upper. The result is comfort and mobility for multiple long seasons on the hill. Featuring advanced protective technology, the Tenet is powered by Mips®, which can reduce rotational energy during certain impacts through Giro's unique two-part construction. For adapting to changes in the weather, they integrate thier adjustable Thermostat Control to give you the power to regulate your temp. Armed with In Form 2 Fit System and our breathable Ionic+® Fleece, the Tenet lets you dial in your fit and comfort quickly.

Sizing (head circumference):

S: 52.5 - 55 cm

M: 55.5 - 59 cm

L: 59 - 62.5 cm