Dry-bag back-packs make good sense, when the boat is to be contained therein for transport, and when equipment is to be stowed waterproof when afloat.

For GRABNER boats:
HYPE, TRAMPER, HOLIDAY 2
HOLIDAY 3*, XR TREKKING*, OUTSIDE*
*Boat without accessories (incl. accessory = size 2)
 

DETAILS:
Extreme tough heavy duty and 100% waterproof truck canvas
Overlapping roll-up seals
Double lifting bottom
2 adjustable padded shoulder straps
Body belt
2 carrying handles
2 adjustable tensioning straps

Colour: red/black
Usable volume: 100 litre
Size: 80 x 40 x 31 cm
Weight: 1.6kg

ATTENTION: Items (like mobile-phone, camera and documents etc.) that must not get wet under any circumstances, should additionally be packed in a plastic bag.