The ADVANCED SKIN 5 SET makes it easy to access your essentials and accessories. An updated closure system, combined with the Sensifit construction, adjusts to your body shape precisely and quickly. It's the ultimate solution for demanding endurance runners. Hydration : The integrated soft flasks make it easy to drink as soon as you feel thirsty, and stays balanced when you run, so you can push the limit and stay hydrated. Freedom of movement : The Sensifit construction offers a snug, precise, comfortable fit and balances the load front and back, so you can move more freely and faster. Ease of use : The components of this pack are easy to use, and offer different ways to adjust the fit and carry poles and accessories. New hydration solution with front access. Hiking|Skating|Classic|Road Running Trail Running Sensifit Quick link 2 side compression laces, adjustable on the go Compatible with 1.5l bladder|Insulated sleeve Soft flasks included *2 (500ml / 17oz) 2 soft flasks 500 std 42 included 2 front stretch pockets 1 internal blader sleeve with hanging loop 1 front stretch zipped pocket 2 front flask pockets with secure loops 2 top stretch pockets 1 main stretch compartment with side zip opening 1 back compartment with mesh pocket 1 low back pocket with 2 side access YKK zipper Multiple pole holder solutions Extra reflective loop for lamp Whistle Soft flask included 0L > 5L Do Not Bleach|Do Not Dry Clean|Do Not Iron|Do Not Tumble Dry|Hand Wash Cold (30°C)