These kunys kp 387 airflow layered gel knee pads have layered gel high density closed cell foam and neoprene padding for superior all day comfort their stabili cap design provides a solid kneeling base and also allows for easier movement effectively increasing range of motion the knee pads have an airflow side panel design that helps to increase ventilation and reduce heat build up they have nylon web and woven elastic straps with side buckle connectors to allow easy adjustment and a secure fit