C’est Silicone!TM トレーニングカップ（ストロー付き、4オンス）

The silicone feels wonderfully soft and pliable, so my teething toddler actually enjoys holding it herself. I love that we can pop off the straw lid and use it as an open cup for practice, then snap it back on for mess-free sips in the car.

The dual design is a lifesaver—we started with the open cup and snapped on the straw lid once she got the hang of it. The silicone feels really soft and pliable, not stiff like other training cups we tried. Cleanup is a breeze since it's one solid piece with no crevices.

The silicone is so soft and flexible, my little one actually chews on the straw without gagging. We’ve mostly used the open cup side so far, but I love that it switches to a straw for when she’s ready.