A comfortable chair made of traditional materials like wood and leather featuring simple but elegant construction details. A stool with three rectangular-sectioned legs, two front legs at the sides and a central leg at the rear, joined together by a solid T-shaped cross structure, which is as stable as a traditional chair with four legs. In Tre 3, a piece of leather has been placed in the high rear leg which gently descends to smoothly and seamlessly give shape to the back and seat. This is a rereading of a kind of chair previously created by leading figures of Nordic design.