We have about 10 Life Factory bottles on rotation for twins. They have silicone sleeves, and have only had one break over the course of a year (it fell from a s

We have about 10 Life Factory bottles on rotation for twins. They have silicone sleeves, and have only had one break over the course of a year (it fell from a small distance without a cap and hit the exposed top and shattered; others have fallen without incident).