Dual side compression with Compressi-flexTM for stable load without restricting movement. Quick access hydration compartment * Stretch mesh energy gel pocket. Patent pending Magnon Electrolyte PocketTM with easy worry- free magnet closure. 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. Large hole microfiber mesh for ultra breathability * Contoured shape profile for comfortable stable ride. Stretch mesh quick stash for easy access. Top zippered pocket for headlamp, cell phone or other supplies * 2 L hydration reservoir included. Weight: 290 g (430 g with reservoir)