Recycle your bag in box! Just rinse it and keep it for the summer. It won’t go stale on you like your expensive water sack because you can just change the bladder. The protection bag comes waxed with a velcro opening and a durable handle to hang off a branch. This one is made for a 3 liter bag in box bladder. Pattern and colours may vary but you decide the size. The cover is made from recycled offcuts.