In stock “naked” Camelbak bladders. How do I explain? Well, these are packs that people where on their back which hold about 2-3 liters of fluid. At the bottom of the pack is a tube that you use to get the fluid from the pack, to your mouth. These are "naked" camelbak. Use these bladders and make your own shoulder straps and pouch for them out of paracord. This would give someone at least 200 feet of usable paracord on their back. Not to mention, you cannot buy a Camelbak product for under $100.00. Make it your own and make it cheaper!