Everyone enjoyed the JoyJolt Savor Cup so much, we turned this double walled coffee mugs set into fluted glass coffee mugs These glass mugs for hot beverages can be used for anything from iced water mug to hot insulated coffee mug glass Borosilicate glass double insulated glass coffee mugs, fridge, freezer, microwave and dishwasher safe. Just like our non-fluted joyjolt savor double wall insulated glasses, this fluted double wall coffee mug set also comes bubble wrapped and gift boxed with the JoyJolt 12 month warranty. An insulated glass coffee mug that won't break a sweat in a cool rippled vibe. Drink with Joy Rippled Clear Insulated Coffee Mugs by JoyJolt.