Try these Coveralls as a low cost substitute for Tyvek. Zipper Front with Elastic Wrists and Elastic Ankles.
Suntech is a spunbonded polypropylene material reinforced by a nylon scrim core and laminated to a new microporous film to provide a superior combination of high tensile strength, barrier protection, and breathability. Protective clothing made of Suntech repels dirt better than woven cloth garments. Suntech provides an excellent barrier against dirt, chemical dust, paint sprays, and other dry particulates, including asbestos, and other airborne dusts. 

Material: Suntech - Spunbonded polypropylene fabric

Code: 13-422-P-C15