The Force Ten Vortex was used for Everest 04, A British Expedition which saw brothers Andrew and Ian Prentice climb the North East Ridge of Everest during the spring. The wind tunnel tested Vortex was used at the highest points of the climb, and being able to withstand wind speeds of up to 130km/h, it is guaranteed to provide protection from the harsh environment. The Prentice brothers, both experienced climbers, relied on a variety of Force Ten equipment. The Force Ten HQ was set up at Base Camp and was the ideal shelter to plan the ascent, whilst Force Ten Electron sleeping bags insulated with down, are uncompromisingly warm. In addition, the brothers used Force Ten Enduro and Edge rucsacs, which are both hydration compatible and boast lightweight yet sturdy designs.