100 LEAD FREE Unlike other crystal glassware which by definition must contains at least 20 lead this double wall borosilicate glass expresso cups are 100 lead free with the super chemistry stability acid alkali resistant and anticorrosion ability it will provide you the most heathy drinking way all the time TOP OF THE LINE QUALITY Made of thicker mouthblown labquality borosilicate glass this double wall cappuccino coffee mugs is scratch resistant and more durable to stand the daily use safe to heat in microwave or freeze in the fridge giving a smooth finish and crystalclean look without any rough or abnormal spots WE RECOMMEND HAND WASH IT IDEAL SIZE Standing at 29 X33 inch these clear expresso coffee cups are perfectly sized to fit under most athome brewing stations like Nespresso or Keurig 7OZ210ML it is not only suitable for expresso but also have enough room to add milk and sugar HUMANITY DESIGN Thanks to the vacuum between the double wall borosilicate glass that doesnt conduct heat the interior coffee will keep hot longer while the exterior wall will stay cool for hand safe touch Hot drinks will not burn your hands and cold drinks will not form condensation No burn marks or wet rings will be left on your especially precious leather or wood table The comfortable wide opening and thick handle is easy to grasp and especially perfect for the sleepy or shaky hands A THOUGHTFUL GIFT These set of 4 double wall glass expressp coffee mugs are packed with a homey gift package it is an ideal gift choice for the persons you love or love you Drinking is the foundation of human existence and we need to drink every time drinks in the mugs looks like its floating in midair an enchanting optical illusion Therefore choosing this healthy and finelooking drinking cups as a gift for them they will enjoy it and think of you every time they drink