The women's flip-flop style is set on a flat heel. A great model that will capture the hearts of unique flip-flop lovers. They are made of plastic and 100% recyclable. The flip-flops contain no animal components. These shoes are vegan and hypoallergenic and contain no phthalates, the chemical compounds responsible for the elasticity of materials like rubber and plastic. Material: Plastic Footbed: Plastic Heel height: 1.5 cm Size: Length of insole 35/36: 22 cm 37: 23 cm 38: 24 cm 39: 24.5 cm 40: 25.5 cm 41/42: 26.5 cm