Upper: natural rubber R'GUM EFFICIENTLining: cotton Insole: padded on cotton-scratch CONFORT IN foamSole: natural rubber LES + PRODUITSCONFORTABLE: cotton-lined foam insole. Grip' outsole: flexible, shock-absorbing and grippy. SUSTAINABLE: Made from natural rubber of premier choice RESPONSIBLE: Created in France, made in the Dominican Republic, involved with Reforest'actionWe are involved with Reforestaction to plant forests with as many trees as possible.