Ergodyne? ProFlex? 1100SF Large Black standard back support is adjustable and detachable with the stretchable zig-zag stitching. Back support has patented power panel positioners for elasticity and is ideal for construction/warehousing. Nylon 40%/polyester 10%/latex 10%/spandex8%/poly-p 8%/vinyl 4%. Large. Durable 280D spandex body material. Closure type: Adjustable two stage. Size: Large. Patented non-conductive Sticky Fingers® stays. Black. 280D spandex body material. Stretchable bias binding with zig-zag stitching. 9 3/4"L x 2"W. Innovative Power Panel Positioners™. Application: Material handling, construction, warehousing/distribution, maintenance, freight/baggage, assembly/fabrication, landscaping/grounds, sherpa porters. Standard Back Support. Adjustable, detachable suspenders. Patented V-shaped design. Fits waists: 34" - 38". Color: Black. Ergodyne® ProFlex® 1100SF Large Black standard back support features patented non-conductive sticky finger stays that provide firm/abdominal support and durable 280D spandex body offers consistent stretch.