HydraPak - Seeker 3L
Get out and stay out. The high-capacity Seeker 3L is a durable, ultra-light hydration storage system for all your long haul excursions. It collapses down to the size of a fist, attaches to your pack or hangs from a tree. You can freeze it to use as an ice pack or fill it with hot water to keep you warm. Adventure seekers, this one's for you.