I loved the design and look of this cup but have found two things to be disappointed in. First, somehow water was able to get into the open area. It wasn't a problem but it didn't allow the glass to look clean. Second, this cup is not very durable. I hand wash my dishes and somehow this glass has cracked at the bottom, so much so that I am going to have to disguard it for safety. I'm not sure if I will replace this cup or not.
Wasn't really sure about this cup at first. Seemed to have a hole in the bottom, but learned that was normal. I have used it only once, but have enjoyed the feel and sturdiness. The cup doesn't get hot due to the double wall. The only reason I gave it a 4-star; there is no top when steeping tea. Would recommend to others.