Chewer: Medium This building block sensory chew necklace has a long shape that makes it very versatile. Whether it’s to nibble on when concentrating, or chomp down with back teeth in times of stress, this chew can be used for the job. It also has two different textures, smooth and rounded on the front and rougher on the back. We have paired this piece with a breakaway clasp and strung it on a soft cord. The breakaway clasp improves safety by breaking open when large force is applied to it and the cord offers a soft non scratchy finish which will not irritate the wearer’s skin. The building block is 63 mm long. 15 mm wide and is 11 mm thick.