Thermos Funtainer Beverage Bottle Replacement Straw (12 Oz.) 12 oz. Thermos Funtainer beverage bottle (w/ no handle) replacement straw. Sturdy bendable rubbery material. 6" in length Fits 12 oz. Thermos Funtainer beverage water bottle models with no handle only! Code on lid of container for straw is F400.