They can be used by both men and women, regardless of the intensity of HEMA training.
They are made of black, durable material. From the outside they are specially contoured to the shape of the knees. They have special elastic bands and velcro for attaching to selected pants e.g. Locust around the calf.
Material from which the Shell Knee Overlays are made is approximately 3 mm thick. Velcro straps are adjustable, so they can be perfectly adapted to your needs.