We ordered a large quantity of mugs after being reassured they've not had any issues with them. After following up with clients that received the mug, we found out that almost every mug holds water in the casing after the 1st wash. I contacted our rep with National Pens regarding this then was rerouted to a different dept. I had to leave several messages before anyone contacting me back, even after contacting the rep again. When we got a call back we were told we would have to send a minimum of 15 mugs with the water in the casing back to Nat'l Pens to be evaluated for a possible partial refund. I had to contact customers to see if I could retrieve these mugs! When I contacted Nat'l Pens back regarding this, then the number changed from 15 to at least 45. Now since Covid, they don't answer their phones. I have left multiple messages. The rep I originally had no longer works there. I'm stuck with 200+ mugs that are JUNK that I spent close to $1000 on. And evidently am never receiving any kind of refund. Do NOT recommend!