Iconic Plein are the unisex slip-on runners made of techno mesh. The brand lettering is featured on the strap on the heel counter. Lace up fastening. Slide-safe rubber outsole. Highly-cushioning material, see-through midsole. Inner lining and removable insole.UPPER #1: 100% POLYESTER | LINING #1: 100% POLYESTER | INSERT #1: 100% ZINC (ZAMAK?) | OUTSOLE #1: 100% THERMOPLASTIC POLYURETHANE (TPU) | OUTSOLE #2: 100% ETHYLENE-VINYL ACETATE