Foam cover, 1/8″ or 1/16″ (only black). Closed cell structure that will not absorb moisture and odour. Thinner than the diabetic cover but similar in softness. Moderate durability as the foam will start to compress over time. This cover works very well with deep heel cups and UCBL devices. Wider variety of colours to choose from such as pink/purple for girls and green/blue for boys. Black for adults.