I purchased this to attach to the portable shampoo station PERRO. The size was good, but I preferred the one I was originally using, so I only tried it on once. (Shampoo and chemicals were not used.) For those in beauty salons, spas, esthetics, and nursing care who have shampoo stations. [Product Description] A new shampoo cushion with unprecedented softness has arrived! The silicone inside has a thicker center in the cushion where the neck bears the most weight, and because it's silicone, it fits the customer's neck. Although it is thinner than existing shampoo cushions, it is a product with good cushioning. *Compatible with MR-0310 MR-0420 MR-0530 MR-0430 CLUB-F CLUB-R D303 CRUISE. *Please note that some types are not compatible.