(TrendHunter.com) The 7-Eleven Slurpee Stay Cold Cup is a new offering from the convenience store brand that will help to prevent its namesake drinks from melting prematurely before they can be consumed. The cup is... (TrendHunter.com) The 7-Eleven Slurpee Stay Cold Cup is a new offering from the convenience store brand that will help to prevent its namesake drinks from melting prematurely before they can be consumed. The cup is...