The Nalgene Sustain 24 oz. Tritan On The Fly Water Bottle in Blue/Blue is a convenient and eco-friendly choice for staying hydrated on the go. Made from BPA-free Eastman Tritan material, this water bottle allows you to enjoy the pure taste of your beverage. With a one-handed push button operation and a locking bail for leak prevention, it's perfect for everyday use. Its compact design fits in most cup holders and bike cages, making it ideal for outdoor adventures.