Cold Brew Coffee. Naturally Sweetened. Protect yourself from scalding hot coffee injuries by drinking Kill Cliff Cold Brew Coffee. Brewed with extra mojo and infused with fair trade hugs, our cold brew is the tendernest, tastiest coffee you ever had. Founded by a U.S. Navy Seal, Kill Cliff is proud to be an official partner of the Navy Seal Foundation. A portion of the proceeds from every Kill Cliff Cold Brew Coffee sold goes to supporting these warriors and their families. Gluten Free. Sugar Free.