This is a Set of 2 Vintage stackable novelty rocks/old-fashioned/low ball drinking cups from Howw Manufacturing Inc.  These clear plastic cups hold up to 12 ounces and measure 3.5 inches tall by 3.5 inches wide.  Made in the USA, they feature Skiing as a theme and say "Tips Up" across the front.  The bottom features a pair of red skis with pole marks in the "snow".  These are new old stock and have never been used.  They no longer have their original tube/Box.  They have been in storage since the late 1980's.  Please review and enlarge all photos for additional details, views and measurements. Shipped via USPS Priority Mail.