Why you'll love it The VaporAir 3.0 7L Vest is the next generation in the award-winning VaporAir/Airess series. By incorporating new materials, hardware and pocket design, these new Vapor vests are our best version yet. Notable updates include newly exposed air mesh shoulder straps, colorful bungee cords on front shoulders and back center panel for additional storage options, low profile hardware on sternum straps and new back zipper pocket that is easier to access when you're on the run. Highlights Maximum Breathability & Function: New 2-layer moisture-wicking air mesh on shoulder straps & back interior to provide maximum breathability & comfort while on your run. More Pockets, More Storage: New back zipper pocket for easy access on your run. Features colorful bungee cords on the front shoulder + back panel for additional storage. Plus storage loops on the side for trekking poles. Comfort Fit for All Body Types: Our Adaptive-Fit Adjustable Sizing System provides a tailored, body-mapped fit ideal for most body types with newly added expanded size of 1XL - 3XL. Features: Adaptive-Fit Adjustable Sizing System provides a tailored, body-mapped fit ideal for most body types with newly added expanded size of 1XL - 3XL Two zippered storage pockets near Adaptive Fit straps ideal for valuables and electronics Two layers of moisture-wicking air mesh on shoulder straps & back interior that provide maximum breathability & comfort Breathable, chafe-free binding for maximum comfort Equipped with a 2L bladder with quick-release valve Secure, front shoulder zippered pockets Front pockets fit bottles and flasks up to 22oz Contoured Chimney back panel construction for maximum airflow Extended kangaroo pocket for more storage Storage loops on both sides are ideal for trekking poles Reflective hits for 360-degree visibility Specifications: Storage Capacity: 7 Liters - 427 Cu. In Weight with bladder: 13oz / 376g Weight w/o bladder: 8.8oz / 227g Material: 60% Nylon, 40% Polyester Wash & Care: To clean pack or vest Hand wash cold Use mild detergent (try our PowerWash) Line dry Do not use bleach Do not use fabric softener Do not iron or dry clean To clean bladder Remove the top slider and empty remaining liquid Separate bladder and hose Reach hand inside reservoir, grab the bottom, and then pull to reverse; turning the reservoir inside out Wash bladder with warm water and soap Run warm soapy water through the hose Rinse both until soapy residue is gone Dry with top open Pro Tip: Use balled up paper towels in your bladder to help it dry Other Cleaning Tips: Stains: Bladder staining is generally caused by food coloring used in liquids. This staining does not affect the functionality of the bladder, yet can be difficult to remove. We recommend using a chlorine free, non-toxic, and biodegradable tablet to combat stains and odors. Plastic Taste: Occasionally users may notice a plastic taste. To reduce, squeeze lemon juice into the reservoir, fill with water, and place in the freezer. After frozen, remove, thaw, and rinse. Lubrication: Some users may need to occasionally lubricate the rubber O-ring on their connector to ensure a smooth connection and for leak prevention. If necessary, apply glycerin, silicone, or pure beeswax as lubricants. Avoid olive oil, coconut oil, cooking oils, etc. These types of oils cause the seal to swell and make it difficult for the system to be disengaged. Nathan Vapor Air 3.0 7 Liter Hydration Vest