DHS HURRICANE NEO rubber, black, 2.15mm thickness. Hardness 40 Blue sponge. Used by a working adult, about once a week or less, for 3-4 months. Measurements are 15.2cm wide and 15.7cm long, but there may be some stretching or shrinking, so I cannot guarantee the size. Please understand this is a used item and no returns or refunds will be accepted. Thank you for looking.