With a heavy duty padded shoulder harness the River Trek is comfortable to carry fully loaded. Adjustable backpack shoulder system Supple, hard-wearing 420D fabric Welded seam construction PVC free   Materials PU coated 420D fabric  PU coated 500D CORDURA® base Weight 883 g Dimensions 70 x 36 x 23 cm Other Features PVC freedouble stitched reinforced seams roll down closure D-ring attachment point backpack shoulder straps backpack sternum strap daisy chain attachment points Roll down closure The simplest and most efficient way of sealing a waterpoof storage bag. To seal it, compress the bag and let trapped air escape, then press the flaps of the opening together, and roll them down four times. Clip the buckles closed and youre done.  Read more