The Colorado model from BIRKENSTOCK is a variation on the classic Rio. The buckle on the heel strap has been replaced by a Velcro fastening, so it's a snap to slip on and off. In short, the ideal shoe for the little ones' impatient feet! The material of this iconic sandal has been revised, and the model is now available in a vegan version. It is now free of allorigine animal components, according to tests carried out by independent control laboratories. The upper is made from a synthetic material that feels soft against the skin and has a velvety touch. Anatomical footbed in cork and latex Upper: synthetic material Insole: microfiber Outsole: EVA Details: two adjustable straps, one with metal buckle and one with Velcro closure; heel strap; vegan "Made in Germany