These folks have made every effort to support the online buyer. When you enter the dimensions of the custom cut pad you want, an image appears, showing you what the proportions will look like, so that you can make sure you're getting the right thing. Also, if you're not sure what density to get, there's a space where you can say what it will be used for, and the site will make a recommendation. You can obviously override it, but the advice is there. All sorts of extras are on offer, with explanations as to why you might consider them. Obviously, these add to the overall costs. I always go for the stockinette cover, because wrestling a piece of foam into a tight-fitting cushion cover is really tricky, and the stockinette makes this much easier. Particularly important if you're making removable covers! During lockdown, working with a reduced staff contingent, orders did take a little longer to arrive, but the explanation for this was made clear.