Mammut Zephir Climbing Harness. Extremely light high-end sports climbing harness for high performance on the rocks in a modern sporty design. Innovative split webbing technology and high-strength Dyneema webbing guarantee maximum comfort and freedom of movement, together with a very low weight. The large ventilation openings make the harness extremely breathable. Featuring great attention to detail, such as the new aluminium Slide Block buckle, the design of the gear loops and the drop-seat buckle.