?100% Durable and Premium Quality Nylon. Concealed zippers with nylon coils, polyester tape, and metal sliders; Lead-free; Non-separating closed end zippers. ?All-purpose; Durable and lightweight; ?Invisible zippers for sewing, crafting, and fashion design; Great fabric zippers for ladies suits and dresses, kurtis, frocks, gowns, palazzos, pillow cases, cushion covers, pouches, purses, handbags, pants, skirts, dresses, costumes, and upholstery ?Sturdy and durable with easy to use in DIY and sewing projects