Did you know that sea otters are part of the weasel family? This set includes 318 mini blocks and assembly instructions to create your own otter masterpiece! These mini blocks offer a superior building experience with a greater challenge and detail than other full size building sets. • 318 pieces, 3 1/8 x 4 3/4 x 1 7/8” • Ages 7+. Choking Hazard - not for children under 3.