The First Years Smart Sipper Spill-proof Insulated Cups
The great thing about The First Years Smart Sipper is that there are absolutely no extra parts. Silicone-covered vents in the actual lid allow kids to drink easily while cutting down on spills. This one will still leak if left inverted, but for the convenience of no extra valves, stems, or straws, it’s a balanced trade-off. This sipper is also insulated and has a see through bottom so parents know what’s in it.
Get it from Amazon, $7.99