VEVOR 50 Pack Sublimation Tumblers 20oz Skinny Straight, Stainless Steel Sublimation Tumblers Blank, Stainless Steel Double Wall Tumbler for Heat Transfer Customized Gifts with Lid and Straw, Gift Box

The product description states that the tumblers are made of food-grade stainless steel, but does not specifically mention if it is rust-resistant. However, customers consistently rate the product highly and state that its quality is great.

The product information does not mention if instructions for the sublimation process are included. However, it does state that these tumblers feature a white heat sublimation coating and come with complimentary shrink wrap, allowing for easy DIY designs.

The product information does not explicitly mention if the tumblers are dishwasher and microwave safe. However, it states that they are made of food-grade stainless steel and compliant with FDA standards, suggesting they are safe for food and beverage use. For safety and longevity, it's best to hand wash and avoid microwaving stainless steel tumblers.

The product description doesn't mention if the coating can handle multiple rounds of sublimation. However, customers are generally satisfied with the product. One review mentions these tumblers are great and sublimate beautifully.

The product description doesn't mention anything about the lids being leak proof or shatter resistant. However, customers generally have positive things to say about these tumblers. One review mentions these are great quality tumblers.