Kokuyo's 'ing' is an office chair developed to support active sitting."ing" is an innovative chair that does not restrict the natural and healthy movements of the body when sitting. Its function is based on a unique "Gliding Mechanism", which freely swings 360° following to the movement of the body. It follows forward and backward, left, right or diagonal twists, and the seating surface swings naturally. The springless gravity mechanism works like a balance ball, making it easy to stretch, lean and bend in the chair.