As a stepping stone to take your trail running to the next level for marathon distances, our updated ACTIVE SKIN 8 is now even easier to use and comfier to wear. The fabrics are still just as soft and breathable, the fit is ultra-secure and the revamped chest pockets provide effortless access to your flasks. Specifications: Best for: Single day Bag Width: 0.39 IN Bag Depth: 7.09 IN Volume: 8 L Weight per unit: 8 OZ Weight Including Accessories: 9.6 OZ Activities: Trail running Hydration Solution Included Product Type Description (Apparel & Gear): Unisex Running Vest with flasks included