I am selling a brand new pair of these, as I noticed the first time I tried them on that the awesome knee protection wasn't low-profile enough for my combo pants that I wear behind the dish.
As you can see in the picture, these 15" don't have a gap between the knee and shin guard like the 17" do, so these offer ideal protection. They have ankle protection but don't come with the removable foot guard, which most of you don't need.
Ump-Attire has them for $62 after shipping, so I'm selling them for $45, shipped. Have never been used and are incredibly light.