Review on Insulated Stainless Steel Camp Mug: CamelBak Horizon 12 oz - Tri-Mode Lid for Ultimate Versatility by Eric Pruett

The lid design is fantastic, like every Camelbak bottle I've had. However, I have to agree with other reviewers' opinions about the uncomfortable base size. The non-slip rubber base is slightly smaller than the base of the cup itself, causing it to wobble. I don't understand why they can't just make it as big as the cup. In terms of insulation, it's about the same as any other thermal mug I've had. Not as good as a regular thermos, but better than an open-air mug.