Hydration bladders can seem kind of boring. But ultimately there are a few things about them that really make a difference:
Are they easy to fill?
Are they easy to keep clean?
Do they impart a "taste" to the liquid?
Is the bite valve easy to use without annoying dripping between drinks?
On this basis Source bladders stack up really well. The Source WXP is unusual in that the design incorporates both a wide top and screw openning. This makes filling and cleaning a dream.
The lining that Source use is near glass-like in its ability to stores liquids without imparting unwelcome flavours.
The valve on the drinking tube is easy to enable flow of fluids yet precise in stopping drips when you have had enough.
The Source WXP bladder is available in 2L and 3L capacities.
