Standard cutters are made with white plastic and dishwasher safe cutters are made with blue plastic. Measures a 1/2" deep on the edge. Made of PLA plastic. Choose standard or dishwasher safe PLA. Treats made by Rex Bites. Find her on Etsy: https://www.etsy.com/shop/RexBites Sizing: XS: 2" Small: 3" S/M: 3.5" Medium: 4" Large: 5" X-large: 6" No returns unless damaged in transit. We do accept exchanges, as long as the cutter has not been used. Buyer is responsible for shipping costs. *Colors may vary. PLA is the common name for Polylactic Acid or Polyactide. PLA is made from starch rich plants such as corn, wheat and sugar beets.