The Twist & Snack Stacker is a stacking container for snacks or powdered formula. Complete with three different sized compartments, carabiner, and removable lid each container stack and locks into place. Product Details: Size (inches): 8.00 h.x 2.25 d.approx. Small: holds 1/3 cup. Medium: holds 3.38 ounces. Large: holds 1/2 cup. Lead-free. BPA-free. Phthalate-free. PVC-free.