Thanks to smart materials and patterns, the Tensor 20's overall weight is as low as 590 grams. A great choice for active sports! - A pleasant AirContour back panel - Durable 420 denier recycled ripstop polyester fabric with HydroShield impregnation for water repelling characteristics - Small item pocket at the top - Inner safety pocket - Stretch side pockets for bottles - Front stash pocket - TipGripper hiking pole holders - Place for a rear led light - Key clip - Compatible with hydration bladders up to 3 liters