Key Smart Chair by Kastel with Armrests and Lumbar Support Key Smart is an executive chair from Kastel's modern collection. It reinvents the functionality of office and home office spaces. Designed by Alegre Design, it features a padded back with lumbar support for an exceptionally ergonomic sitting experience. Fixed armrests and gas structure complete the design. STRUCTURE OF KEY SMART CHAIR BY KASTEL WITH ARMRESTS AND LUMBAR SUPPORT: Seat and backrest are upholstered in fabrics from the following categories (available in the material samples collection): Category A Category C Category D Category P Backrest available in black or white. Fixed armrests in Nylon, matching the backrest. Available with the following mechanisms: Gas Automatic Gas Synchronization Automatic Gas Synchronization with Sliding Seat Please enter the color code in „Product Customization“ DIMENSIONS OF KEY SMART CHAIR BY KASTEL WITH ARMRESTS AND LUMBAR SUPPORT: Available in the following dimensions: W. 53 cm x D. 57 cm x H. 78 cm DELIVERY TIMES: Estimated delivery time: 3 working weeks from confirmation of received payment.