Hydrapak Seeker 3L Ultra Light Water Storage Insulation Filter Compatible New HydraPak Seeker - Collapsible Camping Water Storage 3L BPA PVC Free, Hydration Reservoir Bag, Leak Proof See Photos About this item PORTABLE PACKABLE: Fold or crush the water storage containers when empty and pack into the included storage bag. The flexible design makes it so light and compact, you'll forget it's in your pack. DURABLE VERSATILE: Made of flexible and abrasive-resistant TPU, the Seeker can be frozen to use as an ice pack, filled with hot water (max temp 60C/140F), or kept in your camp kit as your go-to filter bag. EASY TO USE: Low-profile, weather resistant handle and load-bearing lashpoints make this hydration reservoir easy to handle, pour, and carry; the large 42mm opening makes it easy to fill. WATER FILTER COMPATIBLE: Filter more water in the backcountry, most 42mm threaded filters, including HydraPak's 42mm Filter Cap. LIFETIME WARRANTY: Beyond Lifetime Guarantee covers all reservoirs from manufacturing defects in materials and workmanship for the lifetime of the product.