The corys arrived a day late, through no fault of Flip Aquatics. We had a storm, there was an accident, and my road was closed due to it. I was very worried about the corys because it was quite cold. When they arrived the next day I was thrilled they were all alive. The bag was cool, though the heat pack was still warm. All the corys are still alive and well. They are very small, but healthy and wiggly. Thanks Flip Aquatics!