It's like The Crystal Maze for toddlers. First, they post the blocks in the right sections. One in the yellow, two in the blue and three in the red. Then, to open the doors and recover the pieces, they have to choose the right key to match the lock. The colour coding helps and the magnetised loop works as a keyring, so they can keep the keys all together with the sorter. This really takes sorting fun up a level and will keep them entertained for ages.
Sorter with 6 blocks & 3 keys
Develops hand-eye coordination
Teaches numbers, colours & cause & effect
Suitable from 18 months+