Great for hiking, biking, or your daily workout at the gym! Manufactured from the highest quality, food safe 18/8 stainless steel. The matte finish not only helps to regulate internal temperature of the single walled bottle, but it also acts as a shield, keeping exterior water condensation (also known as sweating) down to a minimum. The BPA free, plastic lid features and easy to flip drinking straw; providing effortless access to your favorite beverage on the go. Hand washing recommended.