All Of Baby’S Favorite Treats Fit Right Into Dr. Brown’S Snack-A-Pillar Stackable Snack & Dipping Cups. The Four Cups Feature Twist-To-Close Lids For Spill-Proof Storing And Traveling, In The Freezer Or In The Diaper Bag. • Stack Together Or Use One At A Time • Easy For Little Hands To Hold And Big Hands To Load And Stack • Dishwasher Safe (Top Rack) • Bpa Free, 6M+