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How We Made the Lithos SL Harness

3.0K views
May 8, 2026
3:08

We reengineered our proprietary climbing-harness technology to be thinner, stronger, and built for better mobility — meet the new Lithos SL Harness. Senior Designer of Hardgoods and Equipment Mike Foley walks through the design process, from identifying the key challenges we set out to solve to years of athlete feedback, rigorous testing, and dozens (and dozens) of prototypes. Updated Warp Strength Technology™ features thinner webbing and new flexible materials that move with you, contouring naturally to the body for a supple feel and maximum range of motion. Light, strong, and perfectly balanced, the Lithos SL Harness is built for sport climbers who demand better performance on their hardest projects. Expanded sizing options deliver a more precise fit for every body. Shop Men’s: https://arcteryx.com/ca/en/c/mens/climb?intcmp=home_t1_c_mens_climb Shop Women’s: https://arcteryx.com/ca/en/c/womens/climb?intcmp=home_t1_c_womens_climb #Arcteryx #ClimbingHarness #LithosSL

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How We Made the Lithos SL Harness | NatokHD