Our philosophy

Our products

The Lowdown
Get the lowdown from our blog, including extraordinary stories and technical knowhow.
Rosie Swale Pope, fresh from running from Land’s End to John O’Groats, is about to run to Kathmandu.
Ten Nepalese climbers have made the first winter ascent of K2. And two of them wore PHD suits.
Bags you can stretch out in are quite a rarity. But why? And why are we making them?
Race calendar

From desert races to mountain marathons: our kit picks

Gear adviser

Tell us where you're heading, we'll tell you what to take

Sleep systems

Optimised layering: maximum versatility; minimum weight.