DRY FEET WITHOUT SOCKS: Top layer of soft cotton terry to provide for a dry and hygienic climate in your shoes – especially when wearing them without socks. Sweat is easily absorbed. ODOUR CONTROL: The insoles contain a layer of activated carbon to prevent odors from developing WELL-CUSHIONED AND SLIP-RESISTANT: The bottom layer combines a memory foam cushion with a slip-resistant structure so that the insoles do not crumple or fold. WASHABLE BY HAND: You can use them many times over. MADE IN EUROPE: Lenzen shoe insoles are made in Europe. CR45L3