Stack up the fun with the 10 Stacker Blocks Play Set! The Stacker Blocks Play Set is a playful, interactive set which encourages babies to learn and have fun. With ten brightly-coloured numbered blocks for babies to stack or assemble, the Stacker Blocks can be sorted by their number, colour or size, encouraging babies to improve their hand-eye coordination and problem solving skills. As babies stack their block, they're developing their muscles and coordinate their movements, whilst resolving problem-solving skills by trying to stack blocks in the numerically correct order and shape. Crafted from a durable, BPA free plastic. Suitable for ages 6 months and above.