Features : - Lids fit cups with 2.5 in 3.75 in diameter - Fold and snack for easy storage - Includes 3 lids and 3 straws - 100% silicone About the brand Discover Boon, a leading innovator, designer and manufacturer of infant and baby products. Driven by a strong desire to create modern products that help simplify parent’s lives while retaining their personal style, Boon offers a wide range of products that parents love.