Be aware that colder temperatures can cause the glass drinkware to become more fragile during the transfer process. This is due to the difference in temperature between the drinkware and the heating element.
In colder conditions, we first recommend pre-heating the drinkware for 20-30 seconds at 200°F
*Due to the physical nature of this material expanding under heat, it is recommended to use lower levels of pressure or pre-heating the substrate prior to application. This will help prevent too much force from being applied against the expanded surface during application.*