The Harmony Stowaway Beach Cart with Flat Free tires is extremely easy to use and portable for when you need it most. It comes with extra durable, airless (foam) tires and a compact frame, making it easy to break down and stow in your boat. Don't worry about a flat ever again! The Stowaway beach cart is designed to be mounted under the center of the boat, and includes buckled straps to help secure the boat to the cart while rolling. Can be strapped to the bottom of any medium sized kayak/canoe to allow easy transport.