Wish Dayz 6pcs Colors Elastic Light-up Spike Ball with LED flash light up for fun/Games Package included: 6 colors spike balls. Dimension: Approx. 2.5'' inch (each one). Attention: white plugs in the access, better to pull them out when children play;battery cannot be replaced. Elastic features,squeaky feature,please consider this factor then to buy,some people do not like it,thanks. The color may come random.