The go-to pick for parents avoiding plastic entirely. Reddit parents praise these for durability and a bonus: toddlers love playing with them even outside the freezer.
If plastic-free is non-negotiable for you, Seed & Sprout is the clear community answer. No one else in the stainless steel category gets mentioned with this kind of enthusiasm.
“I use stainless steel ones from a company called seed and sprout, they work really well and added bonus my toddler can play with them for ages!”