Designed with a spill-proof lid, this reusable color-changing mug helps reduce spills and messes and prevents them from falling off, even if you happen to spill the mug. With a color that changes when it meets cold water, this extremely bright mug with a lid and straw will liven up your mood and brighten your day. It is made of PP material. This straw cup has a mouth diameter of 10 cm, a base diameter of 6 cm, and a height of 18 cm. This water cup is a good choice to give your friends, children, or students as a gift. Item Name: Straw Cup Material: PP Features: Large capacity, discoloration in cold, easy to clean, reusable Capacity: 700-800ml Size Details: Straw cup mouth diameter: 10 cm/3.94" (approximately) Diameter of the bottom of the straw cup: 6 cm/2.36" (approximately) Height: 8 cm (approximate) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to the manual measurement. Package includes: 1 x Straw Cup (straw and lid included)