FLEXIBLE STOOLS AND BAR STOOLS FOR ACTIVE SITTING. Stools and bar stools allow you to create functional, varied workspaces with a high degree of flexibility. Kinnarps' ergonomically designed stools come in a range of different heights with and without back. Given the wide variety of designs and materials, the stools can be used in many different environments - from lounges, receptions and canteens to meeting spaces in the activity-based office.