Tough cargo bag, sized to accept any backpack. Volume can be expanded via a end zip. Especially useful to protect hold baggage with fragile contents or loose straps, which can get caught in baggage handling systems.
The regular chain-and-weft weaving of stronger threads creates a strong, but light 420 den nylon fabric with good abrasion and rip stopping characteristics. The outside is water-repellent, the inside is PU coated.