RBK's 5K pants incorporate JDP hip caps which help to protect the hip by dispersing direct impacts away from the joint. They have inner leg zippers for ease of use, and come with a padded two belt system for a customized fit. The molded spinal protector remains loose at all time for comfort and protection. Strategically placed ventilation increases air flow on the lower back. Two piece molded tailbone protection adds comfort and mobility. These pants use traditional lightweight construction with key stretch zones that allow the pant to move with you ensuring greater stride length.