40L Tactical Waterproof Backpack

High Density 900D Oxford Cloth ,Waterproof and rip proof fabric; *KAM Smooth Zipper ,Anti-slip Durable and anti-rust zipper ; *Strong And Neat Bartack ,Can withstand heavier external objects without tearing ; *Large Area Of Velcro Position ,Increases free personality diy space ; *With Side Pockets ,For water bottle and other stuff ; *With Elastic Fixing Ring ,Makes straps not messy;