Tumbler is double-wall vacuum insulated which keeps your favourite beverages cold or hot. 8 hours hot and 12 hours cold. The anti-sweat design ensures pleasant grip and the durable powder coating prevents scratches. The tumbler is made from high-quality food-grade, durable 18/8 stainless steel. The electro polished, rust-proof interior will not transfer flavour, delivering an elegant look and hygienic drinking experience.