Chair using Lattice modifier in 3ds Max.
Modeled in 3ds Max 2017 and rendered in Keyshot 9.3 pro.
Seating Height = 22 Inches.
Overall Height = 50 Inches.
Polys = 38440 and Verts = 42770.
Tutorial also added : https://www.cgtrader.com/tutorials/5229-how-to-make-chair-using-lattice