<ul> <li><b>ALL IN ONE LEAK-PROOF STORAGE FOR MOMS ON THE GO</b> - Put an end to diaper bag mess and endless searching with our stackable, twist and seal, LEAK-PROOF system. You can use these containers to store and organize formula, juice, breast milk, snacks, cereal &amp; more.</li> <li><b>EASY to USE</b> - Each container is securely stacked together with our twist and seal system. Access the container in need by simply unscrewing the container you need. Each container comes with a dispensing inner lid that makes spilling more difficult.</li> <li><b>CAN STACK AS MANY CONTAINERS AS YOU NEED</b> - With interchangeable lids, bases &amp; containers, you can have as many or as few as you need. This set comes with 3 containers, 3 inner lids, 1 cap &amp; 1 base. Each container holds up to 1/2 cup of liquid or 10 oz. of powdered formula.</li> <li><b>STORAGE SOLUTION BEYOND YOUR DIAPER BAG</b> Our Packin' SMART System is great for many in-home uses too. They are great to store crafts items, spices, hair accessories, ice cream toppings, office supplies and much more.</li> <li><b>HIGH QUALITY AWARD WINNER</b> - Innobaby has been making our stacking cups for over 10 years. They are made of high quality Polyproline which is BPA free, Phthalate free, PVC free &amp; lead free. Our designs have won The National Parenting Media Award and iParenting Media Award.</li> </ul>