Bison 22oz Camo Tumbler 4 Camo Options The GEN2 22 oz Tumbler is bigger and better than the previous 20 oz Tumbler. Load it up with craft beer, coffee, iced tea, water or your favorite beverage and don't worry about spills. The new leakproof lid keeps your beverages hot or cold... longer.Bison 22oz Camo Tumbler 4 Camo Options Your go-to Tumbler just improved with our new BambiX Camo wrap.