2L Vertical Reservoir wrap the Trail Back also has

the Trail Back also has dual FlickLock® adjustability and enables basket interchangeability for multi-season adventures

Non-PFC DWR finish for added protection

The foam-stiffened brim will float in the event of an unplanned swim

Sizing clearly indicated on the sock

2L Vertical Reservoir wrap the Trail Back also hasThe Dakine 2L Hydrapak design of the Replacement Reservoir is engineered to be durable and easy use. The Shape Loc center baffle adds some rigidity to the shape of the bladder, which cuts down on shifting of water weight while you're in motion, and makes for a more resilient design. While the wide mouth opening and plug and play connecters make it easy to fill, drain, and clean. And, of course, it's BPA and PVC free.