CONCAVE WAS BORN IN SPRING 2017 DURING THE SEARCH FOR THE PERFECT STEEL TUBE CONNECTION. THE CHALLENGE WAS TO CREATE A GRAPHIC LANGUAGE THAT TURNS STANDARD INDUSTRIAL TUBING INTO ALLURING MATERIAL. THE COMPLETE CONCAVE OUTDOOR FAMILY IS CREATED FROM A SINGLE STEEL TUBE. CHRISTIAN DISCOVERED THAT BY HAMMERING THE END OF A 15MM STEEL TUBE, THE MATERIAL CAN BE INSERTED IN AN OPEN ENDING OF AN IDENTICAL PIPE. THIS INTERCONNECTIVE POSSIBILITY CREATES A WHOLE NEW LANGUAGE AROUND A STANDARD INDUSTRIAL STEEL PIPE. ALTHOUGH THE MATERIAL IS RENOWNED FOR ITS FIRMNESS, THE CHAIRS AND BENCHES ARE SLENDER AND BLEND IN WITH THEIR SURROUNDINGS. WHILE THE INDIVIDUAL RODS ARE HAMMERED TO INTERCONNECT, THE SHAPES OF CONCAVE ARE ALSO DESIGNED TO FLOW ALONG WITH THE HUMAN BODY. THE ARMRESTS ARE COMFORTABLE FOR THE HAND TO REST ON, WHILE THE CHAIR PROVIDES AMPLE LUMBAR SUPPORT.