The Fidlock Twist Bottle 590 with Bike Base Black is the perfect hydration solution for athletes and outdoor enthusiasts. The new leak-proof, self-sealing bottle cap ensures that your water stays in the bottle, while the high water flow valve allows you to quickly and easily quench your thirst. The optional dirt cover also helps keep your bottle clean and free of debris. The BPA-free polyethylene construction makes this bottle safe for both adults and children, and the optimized ergonomic design provides a comfortable grip. It also fits all TWIST bases, making it perfect for use while cycling