The Big River Dry Backpack from Sea to Summit is a waterproof pack sack with a backpack system and is therefore a good compromise between pack sack and backpack. Thanks to the tried-and-tested roll-up buckle, it is ideal for motorcycling, climbing, canyoning and many other outdoor activities. The ergonomically shaped shoulder straps with a height-adjustable chest strap ensure a secure fit and good carrying comfort. Thanks to its low weight and flat pack size, it can be easily stowed away. Material loops on the side allow lashing, tensioning or hanging on carabiners and ropes. This very robust packsack can take on almost anything. Tri-Coat coating for higher abrasion resistance and point loading, it offers reliable protection against dirt and water. The seams are double-stitched and also tape-sealed. A white inner laminate provides better visibility. The oval shape saves space and also ensures that the pack sack cannot roll away so easily.