The Tube Pro Replacement Boston Valve & Cap is an essential accessory for avid river float enthusiasts. Featuring a one-way screw-top valve, this valve ensures a secure, airtight inflation seal that keeps float tubes optimally inflated for a comfortable day on the water. Crafted with durable ABS plastic and a reliable rubber/plastic internal seal, it stands up to the rigors of river adventures while allowing for easy twist-on and off cap functionality. Designed specifically for Tube Pro river float tubes, it offers seamless compatibility, ensuring that it fits right and works perfectly. Ideal for those who love spending sunny afternoons floating down rivers or lounging on lakes, this valve is a must-have for maintaining a hassle-free adventure.