JoyJolt is ecstatic to provide a double-walled glass collection that combines aesthetic appeal with peak functionality. Simply designed and constructed from deluxe borosilicate, these glasses can take you from the arctic chill of winter to the incessant heat of summer. Keep your lemonade cold, your java hot, and your fingertips none the wiser as you clasp your hands around this insulated glassware that is a necessary addition to any collection.