There are days & races where you’re out there for longer. & as the clock ticks towards 10 15 or more hours traditional vests & belts just don’t hold all you need. With its secure pockets & 12 + 3L capacity the new ultra-stable Ultrun S Pack 15 trail running backpack gives you that much-needed space to carry extra nutrition & equipment on long adventures & ultra-marathons. On the front two easy-to-reach mesh pockets hold soft flasks with dedicated drink valve tabs to reduce movement. Smaller pockets on the straps securely hold keys energy gels or used wrappers. Stow your gloves headband & more food in the larger lower compartments which close safely with Velcro & can be easily accessed thanks to convenient tabs. A diagonal zipped pocket on the left-hand side keeps your phone within hands reach to check the route or keep in touch with your support crew. At the rear another zipped pocket holds all compulsory essentials you don’t often pull out such as ID money or survival blanket. A secure pouch carries a hydration bladder with dedicated loops to feed drink valve through. The two large overlapping pockets stretch to accommodate mandatory clothing & equipment & the elastic “Z” strap gives you bonus capacity on the outside of the pack for a jacket or rain cover. Outer silicone toggles keep retracted poles out of the way when the trail doesnt require them. True to our standards the vest is highly-breathable & ergonomic with soft seams for unmatched comfort. Foam inserts on the front prevent any rubbing on the ribcage as the hours wear on. Adjustable side straps can be pulled tighter for added stability on technical sections while the front self-locking zip can be opened during climbing for extra breathability. Reflective strips provide enhanced visibility in low light conditions & the included whistle means you can head out with full peace of mind. Tested & developed out on the trail with runners of all levels the Ultrun S Pack 15 is designed to bring functionality comfort & performance to all your long distance challenges. Sold with 2x 500ml flasks. Features Large 15L (12 plus 3L) capacity to carry all equipment & nutrition on long distance trail runs Secure pockets with easy-access tabs Ergonomic & stable for highest comfort as the hours pass on the trail Hydration bladder pocket Elastic on rear to carry larger items eg waterproofs Pole loops for carrying when not in use 2 x 500ml ergo flasks included