Set of 4 new seals for Stainless Steel Tumbler lids from YETI, RTIC, Ozark Trail, Mossy Oak, etc. The smaller size fits the 10 and 20 ounce tumblers from YETI, RTIC, Ozark Trail, Mossy Oak, Beast, etc. The larger size fits the 14 and 30 ounce size for the same brands.