Platypus GravityWorks Replacement Reservior Kit 4L

Platypus GravityWorks Replacement Reservior Kit 4L. 0L Reservoir Bladder from Platypus is a high capacity resevoir bladder designed to increase the amount of water you can carry with you while hiking or backpacking. The connection to your filtration system via a hose swivel provides easy backcountry water filtration that's ideal for camping backpacking boating or other outdoor recreation.The connection to your filtration system via a hose swivel ensures that water stays in the bladder and not on