DOUBLE LINED Premier Quality Activated Carbon Lining Antimicrobial Lining to Protect Carbon Heavy Duty, Water resistant rubber Zipper for Smell Proof 100 Protection Water Resistant Exterior Back Support Cushion for Added Comfort with Splash Damage graphic. Padded and Contoured Shoulder Straps Quick Grab Handle Industrial Strength Suede Velcro Spot clean with mild soap and water on the outer waterproof shell of the bag only with clean sponge or washcloth. Never put the backpack in washer or dryer. Use a lint roller on the Velcro The backpack is water resistant but don’t leave it in an area where it can get wet. Do not leave backpack in direct sunlight for long extended periods of time (UV light can degrade the fabric) Do not puncture backpack with sharp object as it could jeopardize the odor absorbing abilit