Have design flexibility that fits most any hull on contact. Rear saddles have removable glide socks that fit over the pads, which make solo loading from behind the car very easy. The saddles also pivot sideways, which allows easy loading from the side as well when 2 people load the boat, and the saddles pivot back into place with the hull of the boat as it's loaded on.
Easy to install and maintain, and very solid in use. Saddles don't go flat with use like some saddles do, or not give at all to hull shape like other saddles.
A little noisy when driving with no boat on the car, but that's zero issue when you see how well they work with a kayak.