Seibertron Hydration Bladder 2.5 Liter Water Reservoir Water Bladder Hydration Pack Bladder FDA Approved Tasteless and BPA-Free TPU Material Large Opening Quick Release Tube and 2 Years Warranty Brown

37L,External dimensions:19"(H) x 11"(W) x 11"(D),waist belt MAX:45 Inch,chest belt MAX:60 Inch
27L,External dimensions:16.5"(H) x 9"(W) x 11"(D), waist belt MAX:39 Inch,chest belt MAX:51 Inch
Features:
Huge expandable main compartment - with interior meshed enclosure for small gear
Large middle compartment - Zippered interior small gear pouches
Two Medium and small compartments for smaller gear
Side and Top cinched down gear security straps
Numerous Molle Loops
The Backpack is constructed by water proof 900D material

900D waterproof fabric, but the zipper is not waterproof
27L,External dimensions:16.5"(H) x 9"(W) x 11"(D), waist belt MAX:45 Inch,chest belt MAX:51 Inch
NOTE：This model (27L backpack) doesn't fit attachment pouch. Kindly purchase cautiously
This tactical assault pack backpack can be used as assault pack, bug out bag backpack, range bag, hunting backpack, survival backpack, army backpack, trekking backpack or day pack for daily use
900D waterproof fabric, but the zipper is not waterproof
27L,External dimensions:16.5"(H) x 9"(W) x 11"(D), waist belt MAX:45 Inch,chest belt MAX:51 Inch
NOTE：This model (27L backpack) doesn't fit attachment pouch. Kindly purchase cautiously
This tactical assault pack backpack can be used as assault pack, bug out bag backpack, range bag, hunting backpack, survival backpack, army backpack, trekking backpack or day pack for daily use

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