Standard field Hockey Balls are hard spherical balls, made of plastic (sometimes over a cork core), and are usually white, although they can be any colour as long as they contrast with the playing surface. The balls have a circumference of 224–235 mm (8.8–9.3 in) and weigh 156–163 g (5.5–5.7 oz)   Price (FOB) in USD : $ 1.3 + Freight Charges