Cute Mugs 220ml Stainless Steel Coffee Mug Camping Portable Cup Carabiner Hook Double Wall Christmas Mugs

Works great. Clip seems secure. The only thing I would say is that it is much smaller than expected it holds about half of a normal coffee cup

This mug is useless. "Cute" = not a cup of coffee. It is an espresso cup.

I'd give it a 5 if it were just a bit bigger. But, it's a good little camp cup and I've discovered that I can use it as a makeshift measuring cup.