Used only once The RGD fully submersible backpack provides a full open vertical zip top allowing easy access to the full pack without digging. The RGD Vertipack is constructed of the most element-protective zipper and materials. The primary compartment is submersible and airtight, as are the two additional pockets on the face. Four more external pockets are water resistant located on the sides and hip belt and large enough to accommodate most cell phones and electronics. Two additional external mesh pockets for water bottles and gear. Bag measures approximately 35-40L in size - oblong shaped. This RGD pack has been thoroughly tested to protect against rain, snow, dust and even odors. Constructed of a durable 600D TPU exterior shell combined with a SCUBA style fully submersible waterproof, airtight zipper and double stitched seams – delivering an unmatched performance bag for the field, flight or float. Primary compartments on bag maintain an IP rating of 67, ancillary pockets have a rating of 62 Approximate Dimensions (flexes): 23" tall x 12.5" wide x 8" deep Approximate Weight: 4.25 pounds Approximate Volume: 35-40 Liters Fully waterproof, air-tight & submersible primary compartment with 24" airtight primary zipper (front) Two additional 17" x 4.5" full waterproof, airtight pockets on the face with 10" zipper length Four external water resistant pockets - two (one on each side) on the hip/waist belt approximately 6" x 8" with 5.5" zippered