Sirrus X 5.0 Vest these valves seat securely against

these valves seat securely against the rim bed with a rubber base that accommodates varying rim profiles

Ride with preloaded maps that include worldwide MTB trail data from Trailforks

11% Spandex - OTHER: Knit 100% Polyester

or are hopping on their trainer for an after-work hammer session on the spin bike

you’re in for a treat

Sirrus X 5.0 Vest these valves seat securely againstOffering an unprecedented combination of comfort, efficiency, and nimble handling, the Sirrus X excels on pavement, dirt, and any terrain in between. SMOOTH; COMFORTABLE, AND EFFICIENT: The patent pending Compliance Junction frame design of the Sirrus X provides the smoothest ride in its class. Engineered vertical compliance without sacrificing lateral rigidity translates to more comfort, control, and efficiency on all roads, paved or gravel. RIDER