Top Selling Handle On Amazon. Satisfaction guaranteed. Our handle has been tested on various branded 30 oz tumblers and perfectly fits the YETI tumbler, Other Brands that are compatible. RTIC, SIC Glacier, Grid Gear, Eskimo, Thermik, Ozark, Magnum Steel, Kodiak, Boss, Polar Drifter, Engel, Titan, Polar Pad, Smart, ICONIQ, Epic, Bison, K2, Smart, Zero, Kryo Kup, Iceberg and Frosti tumblers. Our handle is not only a perfect fit for your cup but also fits in most car cup-holders.