Wine Tumbler, 266 ml (9 oz), teakwood. Celebrate in style with this stemless and condensation-free Wine Tumbler that keeps wine cool longer, wherever your plans may take you. The 266 ml (9 oz) matches a standard white wine glass capacity and the stemless design makes it convenient for indoor and outdoor use, storage and transportability. S'well Wine Tumblers feature Therma-S'well™ technology - a triple-layered, vacuum-insulated construction made of high quality, 18/8, food-grade stainless steel walls plus a copper wall layer for superior temperature retention. It means that beverages will stay cold for longer while maintaining a condensation-free exterior. BPA and BPS Free. By choosing re-usable S'well drinkware you can help reduce the use of single-use plastic products that pose a threat to our environment.