Sherpa 11-oz. Vacuum Tumbler & Insulator Color:Blue The adjustable strap accommodates different

The adjustable strap accommodates different head sizes

Built with a space-saving stackable design

and expandable accordion pocket

Playback time at max volume 8hrs

Sherpa 11-oz. Vacuum Tumbler & Insulator Color:Blue The adjustable strap accommodates differentThe Sherpa 11oz Vacuum Tumbler & Insulator from Bullet features rugged, insulated double wall construction to keep beverages hot for up to five hours or cold for up to 15 hours. It includes a clear, press on lid with an easy to use slide closure. This item doubles as a tumbler and portable can insulator, allowing you to enjoy your favorite drinks almost anywhere. Laser is not available on stainless and silver drinkware colors.