Features: -Extra lite -Shock absorbent -Odor resistant -Hand-washable -BPA and phthalate free, and do not contain hazardous materials such as formaldehyde or formamide. Materials : -Rubber Rand and Toe -Injection Molded EVA Construction -The technical name is ethylene-vinyl acetate. This material naturally molds to your feet, giving each step a cool and cushy feeling. The EVA shoes are lightweight, shock absorbent, hand-washable, and odor-resistant. How to care : EVA shoes can be hand-washed using mild soap and baking soda. Wash with a cloth or soft brush and let dry in a cool shaded area. Never put your shoes in the washing machine, dryer, or dishwasher! EVA shoes are heat-formed, so they can be heat-deformed. Native advise to store shoes away from direct sun or heat, as they can warp due to the EVA composition. Native also advise against leaving them in hot cars. How to care : EVA shoes can be hand-washed using mild soap and baking soda. Wash with a cloth or soft brush and let dry in a cool shaded area. Never put your shoes in the washing machine, dryer, or dishwasher! EVA shoes are heat-formed, so they can be heat-deformed. Native advise to store shoes away from direct sun or heat, as they can warp due to the EVA composition. Native also advise against leaving them in hot cars.