How to choose a hydration pack
Finding it difficult to choose a hydration pack? We go straight to the source

Bryce Thatcher knows a thing or two about hydration packs - he invented them.
Back in the 1980s, he got fed up with running in the mountains with a water bottle jiggling around in his oversized backpack, and decided to do something about it.
He took the idea to his grandmother, who got to work on her sewing machine. That first pack started 30 years of innovation. Over the years, Thatcher has poured his experience and passion as an endurance athlete, trail runner, skier, cyclist and canyoneer into hydration packs.
He worked for well-known brands Nathan and Ultimate Direction, before establishing UltrAspire in 2011. Here, Thatcher shares his tips on picking a hydration pack.
"The first thing you need to think about is hydration is how much will you drink and how long until you're able to access water again? Bear in mind that higher humidity, altitude and temperatures will increase your hydration needs.