My Dad's name was Frank Baxter.... (not Geoffrey or Jeffrey Thrower) but I don't think he had anything to do with Ivo's tumbler......
The Dartington tumbler and ejean's both look as if they're much nicer and far more practical to use than wfs Glacier - Glacier is the most horrible thing to hold - it's sharp and uncomfortably heavy, they actually
hurt my hands. If I did use them, (which I don't, they're just too horrrible) I'd still be putting them in the dishwasher.
