Arper - Stacking chair Aava - Blue - Recycled polypropylene - Designer Antti Kotilainen; Arper Stacking chair Blue Plastic material. Dimensions: L 54 x Depth 51 cm x H 78.5 cm - Seat: H 45 cm. With its soft curves, the Aava chair transforms the essential into a suggestive form. Discreet, elegant and very robust, the Aava 02 chair is suitable for multiple applications and spaces, both indoors and out. It's intended for home use as well as in public locations: dining room, restaurant, conference room… The version with four steel legs is stackable, facilitating large-scale use and storage. Aava's classic minimalism looks to the future with new sustainable materials. The shell is made from post-consumer recycled plastic and virgin polypropylene. The shell has varying thicknesses that emphasiseits sinuous profile. It comes in an attractive range of colours.