The Groovy Cup features an outer wall of clear glass that frames a funky, bumpy, colorful surface underneath. They are guaranteed to add some fun to your drinking experience no matter what the beverage. Made with Borosilicate glass, resistant to thermal shock, more so than any other standard glass. Each cup is sold individually. Slight color variations & markings on the glass should are not flaws but part of the standard glass blowing & staining process. * Hand-blown * Borosilicate Glass * Handwash only * 6.8 oz (200 ml) * 2.75" diameter x 3.5" height (7 x 8.9 cm)