The rag chair is part of an exhibition of 100 plus chairs, curated by Workshop of Wonders to celebrate 100 years of Dutch Chair Design in the machineroom of SS Rotterdam. I’ve made some photo’s there and will share them with you. It is designed by Tejo Remy in 1991, but from their site it appears the design is also by Rene Veenhuizen.
The grey chair in the background is the V.I.P. chair, designed by Marcel Wanders in 2000.