Waist Regulation: Velcro-adjustments on both sides of the waist

This DuraSync freehub body has 6 pawls and is suitable for use with Hyperglide and other Splined cassettes

Peri-Canal: Continuous relief channel from tip to tail

seamless 2014 Aluminum

The lower strap also sits right above the calf muscle to help prevent them from ending up around your ankles when you crash

Osprey Hydraulics Bite Valve PLP|EMTB Optimised Waist Regulation: Velcro-adjustments on bothReplacement Blaster Bite Valve to suit Osprey and Hydrapak reservoirs. These are high quality units that feature Hydrapak's bombproof twist shut off design. Who's this for: Anyone with a Hydrapak reservoir of any brand that needs a new bite valve to replace a lost or damaged one. What will it fit: Lots of brands use Hydrapak reservoirs in their packs so if you have one it'll fit, even if it's not from an Osprey branded hydration pack.