The Salomon S-Lab Adv Skin3 12set is an essential bit of kit for trail running and road endurance running. This top of the range running vest will hold up to 12L of gear, which includes the capability to carry up to 3L of hydration. The pack comes with 2 x 500ml Salomon Soft Flasks and can also be fitted with an optional 1.5L or 2L bladder for long days and mandatory gear races. The S-LAB design is 100% running focused. Through that design process the amount of pack bounce is radically reduced as is the abrasion on moving body parts. The Salomon S-Lab Adv Skin3 12set is ultra lightweight at 285 grams.