I have used them to freeze breast milk and it has worked very well. I bought these instead of Milkie's milk bowls because it has a silicone lid. A tray pretty much fills a sandwich bag. My only complaint is that the chopsticks don't come out very easily, but I think that's because I freeze full-fat breast milk instead of water.
2-Pack European Grade Silicone Bunte Cake Pan Set - Non Stick Bakeware Fluted Tube Mold For Jello, Gelatin & Cakes | 9 Inch Baking Pans | Aokinle | BPA Free
38 Review
300PCS Pre-Cut Unbleached Parchment Paper Sheets - Perfect For Baking, Grilling, Air Fryer & Steaming!
36 Review
AmazonBasics Silicone Baking Mat Sheet
48 Review
PME Scriber Needle Modelling Tool, For Cake Decorating, 5.7-Inch
38 Review