Drinks stay cold for 24 hours and hot for about 8 hours. Each tumbler comes with a splash proof lid which enables you to drink out of it without major spillage. (but not classified as leakproof) . The Bottles are leakproof, however,
They do no sweat due to double wall vacuum technology and come in a variety of 12 colors that are powder coated and not painted. Powder coating is more environmentally friendly and more durable. It is recommended to hand wash and to not put in the dishwasher.
They have a limited warranty, however, laser engraved items are not excluded from the warranty. What does that mean for you? Other brands, when laser engraved, or decorated with any item, even stickers, can void your warranty; whereas SIC brand does not.
I have three styles that I am starting out with, but will be adding more in the future.