I am selling this item because I received it as a gift but have no use for it. It is unopened and unused. A cover for 500ml PET bottles. With heat and cold retention function. - Brand: TORUNE - Product Name: PET BOTTLE COVER - Color: Black - Size: For 500ml Condition: Unopened, new Packaging: OPP bag A cold and heat retention cover for 500ml PET bottles, with excellent functionality thanks to the aluminum coating. - Brand: TORUNE - Product Name: PET BOTTLE COVER - Color: Black - Size: For 500ml - Features: Cold and heat retention function - Material: Aluminum coating Thank you for looking.