‘Source’ hydration packs.

One of the major sponsors at the World MTBO Champs in Israel was Source, a manufacturer of bladder drinking systems and sandals (yes sandals, a strange product combination).
I have tried various bladders over the years and had settled on Platypus up until now, together with my Ground Effect resevior dog sac.
All competitors received a complementary 3litre WXP Tech bladder together with a talk about how to survive the Israeli summer temperatures. The bladder seemed very good with a detachable feed tube with a special close off valve, a great opening system to make filling easier and claims of no lingering plastic tastes and easy to clean.
The competition rules stated that all competitors had to carry at least a litre of water so a bladder hydration system or 2 water bottles were needed. After the model event I realised my existing sac though great in UK conditions on long races, was just too big covering too much of my back overheating me. Impressed by the free Source WXP bladder I bought a Source 2 litre Spinner sac and tried it on the long qualifier. It has good space for a tube, pump and tools plus two handy mesh pockets for gels and bars.

To cut it short I was very impressed. The 2 litre Widepac was very simple to fill and the quick connect hose fitting made threading it through the sac really easy. The sac sat snuggly on my back and the delivery of the liquid perfect.
On the four races I have used it on so far it has performed very well and I would recommend it as an alternative to the other major brands particularly as it seems to have a lesser price point.
Source do a complete range of sacs from the light weight racing Spinner right up to the 25 litre Whistler.
http://www.source-vagabond.com