The special construction and design is marked by a newly developed, diagonally positioned, elliptic tube that is bent in a technically tricky 60° curve at the top. The legs in classic V-form can be diagonally stacked and thus align themselves automatically.The plastic shell with its distinctive opening can be stacked extremely flat and also adjusts ergonomically to the user´s body. This shell made with the so called 2K method offers a pleasant flexibility and ideal sitting comfort for the audience at seminars and lectures.When stacked together the arm-rests (in the version with arm-rests) can simply be lifted up.