HYDRATION PRODUCTS

1. Size and weight

Larger reservoirs and bottles tend to be bigger and heavier. Some reservoirs have stiffened elements to make them easier to fill. This can add to the weight. Larger bladders can bulge in the middle when full, making them hard to pack; look for an internal baffle that keeps the spread under control.

2. Opening

A wide opening is easier to drink from, easier to fill from a stream, and easier to squeeze water into from a filter. Widemouthed bottles are less likely to freeze in winter. On a hydration bladder, the opening can be a weak point where leaks occur, so look for strong construction and a good seal. Bladders that open wide (or even turn inside out) are much easier to clean.

3. Design

Detachable hoses can be easier to dry and clean. A scale in millilitres is useful to help camp cooking. Bladders that can stand upright on the ground are easier to fill from a filter.

4. Mouthpiece

The mouthpiece on a hydration bladder must allow easy drinking but not leak. A shut-off valve is a handy feature.

5. Other features

Some products offer insulation options – handy for very cold or hot weather (hydration hoses easily freeze, and keeping water cool is useful on hot days). Others include technology to keep bacterial growth under control.