Come and see our amazing products. Pre Drilled - Pre drilled make easy for you to Personalized DIY gifts.Material - Our double wall blank Glass Tumbler are made of borosilicate glass, perfectly suitable for sublimation supplies and snow globe glitter vinyl diy.DIY SUBLIMATING & ETCHABL - Have a small business or interest to sublimate glassware, these glasses are designed to be sublimated so you can DIY your favorite design on it. Pls confirm with us about the packing info, stock color and exact production time before placing your order.