This is the Montbell L.W. Sit Harness. The size is M. It has only been used about twice. The following is the product description: This is an ultra-lightweight and compact harness, perfect for alpine climbing and backcountry skiing. The two quick-release buckles on the front make it easy to put on and take off even with crampons or skis on. The hip buckle allows for adjustment of the leg loop position. It is equipped with gear loops and a loop for attaching a back rope. * Because it does not have cushioning to absorb impact, it is not suitable for sports climbing, etc., where long periods of hanging or severe falls may occur. Specifications 【Material】Nylon 【Weight】200g 【Color】Signal Red (SIRD) 【Sizes】XS (Waist 57-69cm, Leg 46-56cm) / S (Waist 65-77cm, Leg 50-60cm) / M (Waist 73-85cm, Leg 54-64cm) / L (Waist 81-93cm, Leg 58-68cm) 【Gear Loops】2 【Storage Size】17 x 11 x 4cm