The Salomon Sense Hydro S-Lab Set is an ingenious breathable system which allows you to carry a Salomon Soft Flask with out the need of a belt or pack, so you won't lose time or momentum searching in your pouches whilst running.
Salomon say "Sense Hydro S-Lab Set combines a sensifit construction that wraps around the palm of the hand, with an elastic band to secure the included 250ml flasks to your palm. By not having to hold the bottle in your hand you save energy, allowing you to focus on the race. The set also includes breathable mesh palm material and a terry cloth back, for wiping perspiration. And between races, Sense Hydro S-Lab Set is also machine-washable."