The quality of the Mares mask band is excellent like all products of Mares. The material is well made, very durable and can be washed easily. Mat. 2mm neoprene. Furthermore, it remains despite multiples wearing and washing Dimensionally stable and color-fast, even in salt water! It is very comfortable to wear, and prevents tangles and tangling the back of the head hair in holding the rubber diving mask. Fits in principle to all scuba diving masks. Increases the comfort of the mask m. E. greatly.