the Merlot Wine Glass is Part of the Fully Tempered Stemware Range, This Glass is Fully Tempered From Rim to Foot. These Glasses Are Durable & Reliable & Are Ideal for Hotels, Bars & Restaurants .The Merlot Wine Glass is Thermal Insulated Shock Tested & Resistant to 135 Degrees & Can Withstand Changing From Hot to Cold They Are Extremely Strong & Durable, Shock Tested & Capable of Industrial Cycles, While Maintaining Clarity. Minimum Quantity: 48