Zip Top Silicone Reusable Container Sets of Bags, Cups & Dishes on Food52
Amazon.com: WeeSprout 100% Silicone Reusable Food Storage Bags - Set of 7 Leakproof & Airtight Bags (Four 4 Cup Bags and Three 6 Cup Bags), Freezer, Microwave, & Dishwasher Friendly, for Lunches