Zak Designs Batman ZakSnak All-In-One Drink Tumbler + Snack Container For Toddlers &ndash; Spill-proof 4oz Snack Container Screws Securely Onto 10oz Tumbler With Accessible Straw, Batman To help prevent spills, the screw-on lid has a secure fit and the cone-shaped tumbler design is easy for children to hold. The tumbler features threading on the inside so it can be used alone as a regular tumbler. The snack container portion can be fully removed for easy cleaning and can also be used on its own. The tumbler portion holds about 10oz of your favorite beverage and the snack container holds about 4oz of snacks. This interactive drinkware item is made from 100% BPA free durable plastic for long-lasting utility.