Quick stash right pocket is large enough to hold a spare bottle or other essentials and uniformly compresses with cord * Patent pending Magnon Electrolyte PocketTM with easy worry-free magnet closure. Sliding light weight sternum strap and adjustable side webbing attachments for comfortable fit * Large hole microfiber mesh for ultra breathability. Light weight zippers pulls easily grabbed even with gloves, cold or numb fingers * Left mesh pocket over zippered inner pocket for securely stowing night time accessories, energy foods and other necessary gear * Roomy stash back pouch for easy access to Jacket, raingear and extra foods. 1 Liter Reservoir included. Weight: 160 g (280 g with reservoir)