Review (3/5): Skeptical at first
I had bought these because they were affordable and came in a pack of three. Delivery was okay, when I opened the amazon package, I saw that it was sealed via vacuum sealed bag, like how you would store meat in the freezer. I thought that was strange. There was not really packaging, no brand on it. But I decided to open it. I used the striped one first and it was a bit snug (or maybe I have a big head) at first, but it did its job. I must have not put the cap on properly because I felt water drip inside it, it wasn't too bad though. I still used it. The material is pretty thin.