The Jig Armchair is an armchair designed by Massproductions co-founder and chief designer Chris Martin. The chair has a lightweight and sturdy construction and is primarily intended for commercial environments. The chair is made of steel, which gives the chair a graphic look. The chair comes lacquered in a number of different colors and the seat and backrest are available in a variety of finishes in both fabrics and leathers. Jig Armchair also has the practical feature of being stackable.

Jig is a range of modern and functional furniture. In addition to the Jig Armchair, the range also includes stools, bar stools and lounge chairs.