HydraPak Seeker 4L waterreservoir Mammoth Grey

The HydraPak Seeker 4L is a lightweight, collapsible water container designed for backpacking, camping, hiking, travel, and emergency preparedness. Made from durable TPU and HDPE, it offers a generous 4-liter capacity while packing down to a minimal size when empty. The RF welded seams provide superior durability and elasticity, ensuring leak-proof performance. Compatible with most 42mm threaded filters like the Katadyn BeFree, it allows for easy field filtration. The wide 42mm cap makes filling and cleaning simple, and the container is dishwasher safe (top rack recommended). External capacity markings help monitor water levels, and the reversible design allows for thorough drying and cleaning.

Advantages

Collapsible design saves space when not in use. Durable, abrasion-resistant materials withstand rugged conditions. BPA/PVC free for safe drinking water. Compatible with popular water filters for on-the-go purification. Easy to clean and dry thanks to reversible construction.

Suitable for

• Backpacking and hiking trips
• Camping and outdoor adventures
• Travel and emergency kits
• Everyday hydration

Key specifications

• Capacity: 4 Liters (135 fl oz)
• Material: Thermoplastic Polyurethane (TPU), HDPE
• Color: Mammoth Grey
• Unfolded Dimensions: 430 x 165 mm (17 x 6.5 in)
• Cap Diameter: 42 mm
• Filter Compatibility: Yes (42mm threaded)
• Temperature Range: -20°C to 60°C (-4°F to 140°F)
• BPA/PVC Free: Yes
• Dishwasher Safe: Yes (top rack)
• Attachment Points: Side grab handle, lash points
• Seam Construction: RF welded
• Collapsible: Yes
• Fill Gauge: External capacity markings
• Reversible for Cleaning: Yes
• Leak-Proof: Yes

Recommendations

For best results, pair with a compatible 42mm filter like the Katadyn BeFree for clean water in the backcountry. Always dry thoroughly after cleaning to prevent mold.