Birkenstock Kids - Rio (Toddler/Little Kid/Big Kid). Color Electric Metallic Copper Birko-Flor™. Low Stock. On sale for $52.46. MSRP $69.95.. 4.7 out of 5 stars3 left in stockBrand NameBirkenstock KidsProduct NameRio (Toddler/Little Kid/Big Kid)ColorElectric Metallic Copper Birko-Flor™Price$52.46MSRP: $69.95