Ultra-Light Water Storage. The great outdoors just got greater. The Seeker is HydraPak's ultra-light, durable water storage bag for camping, backpacking, you name it. A weather resistant pour handle, and two side lash points for hanging or pack attachment make it a versatile backcountry tool. It collapses down to the size of a fist, you can freeze it, and the leakproof, tethered cap is filtration compatible making it the perfect tool for the long haul. | Hydrapak Seeker Ultra-Light Water Storage Bag in Grey | Size 4 Liter