Protects backpack from abuse and doubles as a simple gear duffel when traveling the globe to your next mountain adventure. Durable 420 denier nylon ensures your pack will arrive at your destination unharmed. When not in use duffel folds into side pocket for compact storage. Internal side pocket stores small items. Two conveniently located grab handles allow for easy transport. Lockable zippers deter thieves (lock sold separately). Adjustable shoulder strap with elastic strap management. Clear ID pocket makes finding your duffel easier. Compatible with most 60L to 95L backpacks. Material: Denier Nylon.