There are several brands that offer clay mitts specifically designed for car washing and detailing. While the market may vary depending on your location and availability, here are some notable brands known for their clay mitts:

1. Marflo’s
2. Chemical Guys
3. Mothers
4. Adam’s Polishes
5. Griot’s Garage
6. Auto Finesse
7. Nanoskin
8. The Rag Company
9. CarPro
10. AutoGlym

These brands are well-regarded in the auto detailing industry for producing effective clay mitts that help remove contaminants from vehicle paint surfaces safely and efficiently. Each brand may offer different variations or models of clay mitts, catering to various detailing preferences and needs. When choosing a clay mitt, consider factors such as its effectiveness, durability, ease of use, and compatibility with clay lubricants or detailing sprays. Reading customer reviews and researching product specifications can also help you make an informed decision based on your specific car care requirements.