Koi-Booki polypropylene chair, 100% recyclable, injected polypropylene shell, legs of extruded aluminium and frame made of die-casted aluminium . Fire-retardant version is also available. Vertically stackable up to 20 pcs, is lightweight and resistant. Koi-Booki can be equipped with an anodized aluminium linking device to form rows of seat, customized through application of adhesive labels. Thermoformed fabric cushion is also available.