Valutek VTSHCVPP-XL Polypropylene Cleanroom Shoe Cover [Elastic Ankle Cuff, Blue, 18in Extra Large] 100 pieces Nonwoven, 100% spunbond polypropylene with stitched seams Disposable, lightweight, breathable, Strong and durable Elastic ankle cuffs Material Weight: 40 grams/square meter 50 pairs