Vaikobi 650 Hydro BladderDesigned to integrate seamlessly with Vaikobi PFDs, this 500mL Hydro Bladder fits perfectly into the front pockets of the V4 PFD, both pockets of the VXP, and the back pocket of the VXI. Its longer length tube allows for flexible routing through your PFD for convenient, hands free hydration. The tube can also be trimmed to suit your preferred setup. Made from taste free, BPA free materials, this reservoir is a clean and efficient way to stay hydrated