Toys of Wood Oxford Wooden Shape Sorter Stacker Puzzle- Wooden Shape sorter Toys and Stacking Toys for 3 Years Old Suitable for Montessori Learning Stacking and sorting shape puzzle -15 different colours and shapes blocks can be taken on and off the pegs by twisting and screwing on a crocodile! Sorting puzzle by colour and shapes-A bit thinking is needed to work out which shape and slots to fit which peg and how to twist the blocks around the pegs to stack or take it out. It helps to train children for problem solving, lateral thinking, patience and concentration while learning colours, shapes and having fun. Suitable for children 3 year plus. It is always advisable that parents or other adults are present to supervise and enjoy the interaction of children with this toy. Safe and Environmentally Friendly: it is made of sustainable wood with environmentally friendly and non-toxic paints. All wooden toys by Toys of Wood Oxford are tested by the sellers own or friends children. It conforms to EN71 and CPSA Standard and tested and certified by International Accredited Labs.