DuPontª Tychem¨ QC One Size Fits All Yellow Bound Seams Sleeve measuring 18" offers magnificent protection against 42 chemical challenges for at least 30 min. DuPontª Tychem¨ QC seam sleeves fabric make use of rigidity of DuPontª Tyvek¨ fabric with polyethylene coating provides enhanced durability and lightweight. One size sleeve that fits most has elastic at both bicep and wrist ends offering immense arm protection with secure fit. 18" Long sleeve is ideal for use in applications like food processing, petroleum refining, chemical processing, pharmaceutical, pulp and paper manufacturing.