Today only, get the RTIC 30 oz. Tumbler for only $11.99! That’s the lowest price on record. This tumbler is highly rated, with 4.5 stars from 3,161 reviews. We’ve compared the Yeti and Ozark Trail tumblers, but based on the reviews, this RTIC tumbler looks like it can compete with the best of them.  Double wall vacuum insulation maximum temperature retention & insulates hands from the cold