Enjoy some 4-alarm fun thanks to these Fire Hydrant Molded Cups! These sipper cups are the perfect addition to your child's firefighter birthday party and make great take-home party favors. At 9 oz., these plastic cups hold the perfect amount of refreshments to keep guests hydrated in style. Plastic. 4" x 5 1/2" cup with 8" flexible straw. 9 oz. 8 Cups with 8 Straws Enjoy some 4-alarm fun thanks to these Fire Hydrant Molded Cups! These sipper cups are the perfect addition to your child's firefighter birthday party and make great take-home party favors. At 9 oz., these plastic cups hold the perfect amount of refreshments to keep guests hydrated in style. Plastic. (8 pcs. per unit) 4" x 5 1/2" cup with 8" flexible straw. 9 oz.