RYKA Women's Charisma Walking Shoe 100% Textile/Manmade Imported Rubber sole Weight is 6.8 oz. Virtually seamless breathable mesh with synthetic overlays and computer stitching on the medial side. Memory foam with latex base to prevent the sock liner from staying compressed, providing support all day. Abrasion grade lightweight eva midsole. Durable abrasion grade eva, with rubber in strategic high wear zones.