Designing the ultimate race pack ULTRUN S PACK with Sebastien Chaigneau

Designing the ultimate race pack with Sebastien Chaigneau - UltRun S Pack
Sebastien Chaigneau always wanted to design his race pack, so it felt like he was slipping on a pair of perfectly designed trail running shoes. Seb, textile engineers and product designers gather around the table to design the ultimate race pack.
The only goal: to forget that you are wearing a race pack.
Intuitive and efficient. Trail legend Sébastien Chaigneau spent 10 years developing his ideal backpack. Carefully measuring every centimetre to optimise space and ergonomy. Nothing is left to chance in the resulting 80-gram pack, which holds everything necessary to run 100 miles at speed without moving an inch.
Two large compartments are located on the back. The bigger, zipped pocket holds compulsory equipment such as extra layers while the second is highly extensible and designed for quick access. Convenient silicone toggles keep retracted poles out of the way when the trail doesn't require them.
Two front pockets on the chest accommodate up to a liter of fluid in soft flasks. Their optimised location allows for easy hydration and refill at any time without having to remove the bag. Six more, easily-accessible pockets around the sides and waist hold small personal belongings and race nutrition. Simply reach for what you need, no contorsion required. The pack comes with two 500ml Ergoflasks.
The fabric of the vest highly-breathable with soft, non-irritating seams for unmatched comfort. Drawstrings allow for easy adjustment while the front zip can be opened during climbing and is quick to close, providing added back support on descents.
Gear up for your next ultra, and ""give yourself the opportunity of free exploration"", as Seb would say.
Exceptionally light thanks to optimised materials and surfaces, the pack weighs only 80g!
Ergonomic design which adapts to any bodyshape and sits snugly without bouncing: pro tried and tested!
Highly-ventilated and breathable fabric which ensures sweat and moisture are quickly evacuated to keep you fresh and dry on the trail

[@BrianFitzsimons]

Excellent pack. I've run with it so often that its easy to forget what an essential piece of kit it is.

[@MrTVervolg]

looks awesome, now please start making your gear in bigger sizes for bigger runners! (for example, for this vest make a xxl please)

[@k10a1]

All of Compressport is black color.
I want white one for summer season.