These beautiful planters are made of aluminum metal so they will never rust. The measurement of the planters are: Large - Diameter at the mouth is 27 cm or 10.63 Diameter at the widest point is 33 cm or 12.99 Height - 37.5cm or 14.76 Medium- Medium - Diameter at the mouth is 21cm or 8.27 Diameter at the widest is 27.5 cm or 10.83 Height -31.75 cm or 14.86 Small Small - Diameter at the mouth is 15 cm or 5.90 Diameter at the widest is 18 cm or 7.08 Gold Planters, Black & Home Decor, Wedding Planters