Our Alcavi Original “V1” Series Water bottle 21oz has a unique design that portraits Alcavi brand core colors and slogan. Its shape grips to cages and fits comfortably in the hand, making it a great compliment for any of our bikes. It has a revolutionary twistable cap to prevent your water from spilling while you pedal. To open and close the bottle, just twist it with your mouth and the liquid will flow. Our bottles are made with food-grade materials and are BPA-free.