The Jiivahar were a sentient species descended from hairless simians. They were excellent climbers, with a number of physical attributes that facilitated that ability. They had a streamlined body, with hollow bones, giving them a light frame. Their long limbs were flexible and were covered in tiny pockmarks that provided additional grip. The Jiivahar also secreted sarvin from the pores of their hands and feet. That substance was a strong adhesive that adhered to virtually all materials.