??Plastic. (8 pcs. per unit) 3 x 2 x 4 3/4 with a 7 1/2 flexible straw. 16 oz.;Great edition to any building brick theme Birthday party.;16 oz;re-usable;straw included

• 8 building block Reusable Cups with Straws - Party Cups
• medium
• Red, Yellow, Blue, Green

8 building block Reusable Cups with Straws - Party Cupstoyco