Original Bottle, 260 ml (9 oz), azurite marble. S'well Bottles 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 up to 27 hours and hot for up to 12, while maintaining a condensation-free exterior. The 260 ml (9oz) bottles are perfect for on-the-go drinking and fit snugly inside hand-bags and lunch-bags. Bottle top is secure-fitting, leak-free and the opening fits most ice cubes. The bottle conveniently fits in standard-sized cup holders. BPA and BPS Free. Hand-wash only. By choosing re-usable S'well bottles you can help reduce the use of single-use plastic products that pose a threat to our environment.