From the Star-K: Shatnez in Oven Mitts
Cuisinart brand oven mitts, product of China, with label stating “100% Polyester Filling” contain a shatnez filling. They are not pure polyester as they contain wool and linen. In general, oven mitt fillings should be checked for shatnez, especially if they are made in China. Silicone mitts without a filling do not require checking.
From The O/K: Snapple
A limited number of Snapple Diet Cranberry Raspberry 6 packs (16 oz. bottles) were mistakenly printed with the O/K Kosher symbol on the outer cartons. This product is NOT kosher certified and the actual bottles do NOT bear the Kosher symbol.