These are truly the best! Hurry over to Groopdealz and get one of these Microfiber Scratch-Free Duster and Wash Mitts for Only $5.99! (Reg. $16.99). Microfiber Premium Scratch-Free Wash Mitt is extra plush and fluffy, and holds tons of suds to make any car wash a fun and safe experience. Microfiber is the best car washing material because it is extra soft, extra absorbent, and helps protect against swirls and scratches.