The 4 Pack Arctic Cool Instant Cooling Towels set includes two grey and two blue 15" x 28" towels each with UPF 50+ protection. Made with Hydrofreeze technology, these solid rectangular towels are perfect for activities like gym training, weightlifting, yoga, and running. The towels are made of a polyester, microfiber, and cotton blend, making them durable and comfortable to use. They come with features like textured designs, compressed/magic towel properties, and are machine washable for easy care. The Arctic brand ensures high quality and reliability for all your fitness needs.