Great Storage But Not Too Bulky: One inner pocket with insulated layer fits up to 2-3L water bladder. Two front pockets work great for your personal belongings sweatshirts, wallet, first aid kits, phone, keys, snacks.
Molle and Straps is A Bonus: The MOLLE system allows you to carry more items. The adjustable shoulder waist and chest straps are good for keeping the pack from flapping around.
Insulated Compartment: This backpack has an insulated layer made of thick aluminum foil material that holds a 2L water bladder for up to 4 hours of liquid cooling. There are two tapes on the top to ensure that the bladder does not bounce during your hiking.