Body: Soda-lime Glass || Cap, Holder: Silicone
Strong Tempered Glass
The Tumblers by Glasslock are made of tempered glass, which has a shock resistance 3 to 5 times higher than normal glass.
Tea Bag Hole
A hole in the center of the cap is especially designed so you can pass your tea bag through and a small grip on the border of the cap fixes the thread.
Removable Silicone Cover
The removable silicone cover around the tumbler will protect you from burning your hands while drinking hot beverages and has an anti-slipping function.