The WEDGiTS™ 15 piece starter set of building block toys provide six (6) different sized blocks that are all “non-choking”. Sometimes referred to as square donuts the set has an easy play design with nesting and stacking features for young hands. With all parts big enough to keep out of a choke tube be assured of comfortable play for toddlers and older siblings. There is no wrong way to build! The open-ended design of WEDGiTS™ building blocks introduce the spatial world of angles, shapes, color patterning, matching and creative play. This set is compatible with all standard WEDGiTS™ products making it a toy that will grow with your child. Comes with a product guide showing ideas of different designs for each child to build. The term “wedgits” came from the toy’s symmetrical design that allows the blocks to actually wedge together using pure friction.