• Set of 4 accessories for Stanley Cup: 1 bottom protector and 3 straw covers for 9-10 mm straws • The bottom protector shields the cup from bumps and damage, and is non-slip • The straw covers prevent dust from entering and help you drink water in a healthy way • Reduces cup noise and improves the longevity of the cup • Made of safe, soft, elastic, durable, and reusable silicone • Easy to clean, hand washable • Straw cover diameter: 10 mm • Bottom protector diameter: 7.5 cm • Package includes: 1 bottom protector (purple dots) and 3 straw covers (white, pink, and purple) • Cups not included • There may be a 1-3 mm difference from the specified measurements • Ideal as a gift for friends and family