Review on Ultimate Durability: KISEER Stainless Shatterproof Unbreakable Restaurant Ware by Guerdon Draper

Failed to load media. I bought this Monster Hunter mug from Fangamer.com and needed additional steel mug inserts so I didn't have to wash it every time I used the mug and could just pop it in the dishwasher. Their sizes matched so I ordered replacements. The included steel mug fits snugly inside the mug so it won't tip over while drinking. They're a hair's breadth smaller and don't fit tight, so they slope. A climb I can handle and I'm glad I have them, don't know if I could find a better fit but they work.