Food-grade Material: Our sublimation tumblers are made of food-grade stainless steel, and are compliant with FDA standards. The outer body is also crafted from stainless steel, ensuring safety and durability. This means you can use it for a long time without worrying about quality issues. Easy Sublimation: Our blank sublimation tumblers feature a white heat sublimation coating, along with a complimentary shrink wrap, making DIY designs effortless and enjoyable. Unleash your creativity and create eye-catching personalized cups. Two Sublimation Methods: Our sublimation cups support two DIY design methods: using a sublimation oven or a heat press machine. You can flexibly choose according to the accessories you have at home, enjoying endless possibilities for personalized designs. 20oz Large Capacity: With dimensions of φ75 x 210mm /2.95 x 8.26inch, each tumbler has a capacity of 20 ounces (591.5 milliliters), providing ample space for your drinks. The multiple accessories included in the sublimation tumblers bulk provide you with more usage options. Perfect DIY Gift: Each blank sublimation tumblers set comes with a gift box and ribbon, enhancing the uniqueness and aesthetics of the gift. You can choose our sublimation tumblers as gifts to create unique presents for your loved ones or clients, expressing special emotions and care.