Ergonomic Mid Back Design - Crafted with modern ribbed stitching, offering both style and lumbar support for long hours of comfortable sitting. Adjustable Height & Tilt Lock - Easily customize your seat height and enjoy up to 20° tilt with adjustable tension control or lock the chair in an upright position. 360° Swivel & Smooth Mobility - Equipped with a smooth swivel function and durable dual-wheel nylon casters, this chair moves effortlessly across different floor types. Sturdy Metal Frame - Built with a strengthened single-piece metal frame to ensure long-lasting sturdiness and support. Easy Assembly & Floor-Safe Casters - Quick to assemble with minimal effort (all tools included) and designed with floor-safe casters to protect your surfaces from scratches.