The Bush Home Sienna Modular Arm Set with Pillows is designed exclusively for use with the Bush Home Sienna Modular Armless Chair (sold separately), allowing you to add armrests and complete your seating configuration. Important: This set includes arms and pillows only. It does NOT include a chair or seating base. This modular arm set attaches to the ends of a Sienna armless chair to create a finished seat, or can be used across multiple units to build a sofa, sectional, L-shape, or U-shape layout. Upholstered in a durable, water-resistant fabric, this versatile modular piece is designed for easy maintenance and everyday living. Part of the Sienna modular collection, this arm set gives you the flexibility to build, expand, or reconfigure your seating over time, creating a layout that adapts to your space and your needs.