Terra Plana Barefoot Men's Aqua Suede Black Shoes Upper: Suede. Sole: TPU Collar/Panel & Lining: Woven Triexta & Polyester Insoles: 5.0 mm Press EVA Insole Sole Thickness: 3 mm. Eco: Usage of Eco Friendly Materials Weight w/ Insoles: 8.9 oz.Weight w/o Insoles: 8.4 oz.