Indow was very easy to work with. For having found them on the Internet using a Google search, and given how much the inserts cost, I was nervous, to say the least. Turns out to be a respectable U.S. manufacturer following stringent repeatable process, very responsive to customer questions, leveraging technology in extremely effective ways to make the measuring and purchase process as seamless (or gap-free, I should say) as possible, and providing a high-quality product that truly delivers on its promise. In my case, the goal was to reduce road noise, and the inserts did not disappoint. Bit of a manufacturing lag, but I would say that is probably a happiness problem for the company. Nowhere near as long as it takes, say, Rivian to deliver a car after you order from them.