The Grivel Double Spring Evo is a light and minimal double elastic leash for ice axes reinvented in its style. Designed not to lose the tools during use. The insertion into the ice axes is via a simple toggle blocked by a rubber pad (without carabiner), while in the harness via a cow hitch knot. A swivel on the harness side avoids twisting and makes it smoother in use. Activities include mountaineering and ice climbing. Materials/construction/technologies used are polyester, rubber, and aluminium. It weighs 57g.