Storage cart is perfect for keeping block sets of any size, even large ones, organized. Multiple 12″” deep cubbies keep blocks easily accessible and make cleanup a snap when playtime is over. Birch cart is designed specifically for use with ECR4Kids blocks. Casters are included for mobility. Each of the top compartments measures 11-1/4″” wide x 6-1/2″” high. Each middle compartment size is 14-1/8″” wide x 6-1/2″” high. Each of the two bottom compartments measures 23″” wide x 6-1/2″”. Storage cart is recommended for children ages 3 and up.