20L Heavy Duty D500 Vinyl DRY BAG (with shoulder strap) Large 20 Liter capacity leave plenty of room for equipment you want to bring on your adventure. "Extra Grip" Heavy Duty Vinyl doesn't get slippery when wet and maintains it flexibility in freezing temperatures. Includes shoulder strap. Adjustable size allows it to compress down for smaller loads. Comes withComes with heavy duty vinyl sealed seams. Easy twist and clip closing and opening.