The PCS-4-2 uses the 100-5D Micro-Adjust Clamp

XD Driver freehub for SRAM XX1 cassettes

AnyValve pump head automatically adapts to Presta

With two different slots

Includes a 2L bladder

USWE Shape Shifter Reusable Bladder - 2.5-3.0L Expandable algolia-ignore The PCS-4-2 uses the 100-5DThis Shape Shift hydration system adds a versatile baffle. The baffle can be zipped to slim the bladder profile and unzipped to increase fluid volume or reverse to clean and dry. The patented super wide slide top opening makes it easy to load up with ice on hot days and turn inside out to clean when your adventure is complete. This product is made by Hydrapak LLC for USWE Sports AB SIZE OPTIONS 1,5L (*2,0L unzipped baffle) 2,5L (*3,0L unzipped baffle)