Edelweiss Challenge Sit Harness Xl. 3SO Buckle System - This system allows quick adjustment as well as increased safety due to the auto-lock system. Specifications for Edelweiss Challenge Sit Harness: Manufacturer: Edelweiss Size: Extra Large Features of Edelweiss Challenge Sit Harness: Weight: 390 grams Number of buckles: 3 Reinforced tie in CE and UIAA Certified Package Contents: Edelweiss Challenge Sit Harness The Edelweiss Challenge Sit Harness is a quality addition to the Edelweiss lineup. For more great deals on Harnesses by Edelweiss please browse our Edelweiss Climb page.