So hard to confidently buy this sort of thing online. These people are helpful and responsive. The delivery was within the promised time frame. The product seems sturdy and of good quality, I haven't had reason to wear them yet. The reason I only gave 4 stars and not 5 is because I don't find the fit exactly right. Certainly plenty of calf room and room to adjust, but the shoe part seems quite loose around the heel. Might cause blisters if I don't wear thick socks. Not sure this is a fair reason to deduct a star, everyone's needs are slightly different, so an exact fit would just be a coincidence.
All considered, I'm reasonably happy.