Play, Collect & Swap! This bag of marbles contains 21 marbles, 20 small (Diameter 1.6cm) and 1 big marble (Diameter 2.5cm) all with different beautiful colours running through them, red, yellow, blue or green. Gift Bag, comes with an illustrated white bag perfect for keeping your marbles safe. Warning : Not suitable for children under 3 years. Product Dimensions : Length: 9cm x Width: 12cm x Depth: 3cm Designed in Cornwall. From the Traditional Toy collection by CGB Giftware.