The Towels by Doctor Joe Detailing Kit is an incredible bulk package of 600 microfiber towels perfect for auto detailing. Includes 150 blue towels, 150 green towels, 100 black towels, 100 red towels, and 100 yellow towels. Each towel is 300 GSM and made with an 80/20 microfiber blend (80% polyester, 20% nylon). They're versatile enough to be used for a variety of tasks from scrubbing and drying to wax/ceramic application and quick polishing!