KleenGuard™ Personal Protective Equipment (PPE) enables rather than inhibits – allowing for maximum productivity and safety for you and your employees. KleenGuard™ A20 Shoe Covers are designed to move with you – and your employees – while helping protect against hazardous and non-hazardous dust. These protective garments offer superior particle holdout coupled with unmatched comfort attributes. These shoe covers are packaged for cleanrooms (double bagged) and feature seamless elastic sole, toe and heel.. Boot Covers. Apparel Type: Boot Cover; Material(s): MICROFORCE* Barrier SMS Fabric; Color(s): White; Color Family: White.