DuPont Tyvek 400 Shoe & Boot Covers Applications include: lead and asbestos abatement/remedation, general maintenance/operations, spray painting, general clean-up. Protection is built into the fabric itself, there are no films or laminates to abrade or wear away. Tyvek fabric offers an inherent barrier to particles down to 1 micron in size. Tyvek fabric's durability advantage over microporous film and SMS fabrics delivers consistently better barrier, even after wear and abrasion. Tyvek garments are composed of flash spun high density polyethylene which creates a unique, nonwoven material available only from DuPont Pack of 200