* 2-in-1 design The two-in-one lid offers two mode: Turn one way for direct drinking; turn the other way for inserting a straw. Rotate it again to prevent spilling. * Superior quality HYDY vacuum thermal series observes the stringent quality control in line with the Swiss SGS safety standards. It is made using advanced 18/8 (304) stainless steel food-grade, non-BPA (BPA free) and other harmful substances, it will not have any chemical change, easy to clean and more resistant to corrosion, allowing you to drink healthy water without worries. * Excellent thermal insulation effect Whether you are in your office, gym or enjoy the outdoors under the warm sunshine, double stainless steel bottle is designed for 6 hours hot thermal insulation and 12 hours cold thermal insulation, no matter in what kind of environment, you can enjoy cold or hot drinks.