Freezer packs, 160ml, perfect for storing breast milk. 20 packs included. I purchased these but ended up not using them. Please understand the current condition before purchasing. I plan to ship only the contents. If you would like the box as well, please comment. - Capacity: 160ml - Quantity: 20 sheets - Material: Food-grade polyethylene - Features: Freezer safe - Usage: For breast milk storage Thank you for viewing.