The Thunderhead Submersible backpack offers 28 liters of waterproof storage with multiple pockets. Constructed from durable recycled nylon with waterproof zippers, it keeps contents dry in wet conditions. It includes Lariat gear straps and Hypalon attachment points for radios or GPS. An adjustable and removable lumbar support strap enhances comfort. Compatible with the Thunderhead Backpack Padded Insert for extra organization.