This unbranded mechanical height-adjustable ergonomic children’s study chair, model KSC-MECH-GRAV-4PR, is built to support consistent, comfortable seated positioning for growing learners across daily study activities. Visually, it features a soft padded seat and separate contoured backrest upholstered in printed woven polyester with a delicate snowflake pattern, paired with a smooth, color-matched four-prong rolling base for a streamlined, child-friendly aesthetic that integrates seamlessly with both casual and dedicated learning spaces. Its compact overall footprint of 660 x 610 x 900 mm avoids visual clutter, while the wide four-prong base creates a stable, anti-tip foundation for regular use. The chair is constructed with durable, child-appropriate materials: the seat and backrest cushions use high-resilience polyurethane foam with a 35 kg/m³ density and 45% rebound rate, upholstered in abrasion-resistant fabric rated to withstand 30,000 cycles of use. The height adjustment mechanism relies on powder-coated carbon steel lift columns, supported by powder-coated steel crossbars and a 14 mm thick bent plywood internal seat support board. The injection-molded polypropylene base holds 50 mm diameter nylon casters with carbon steel mounting brackets, secured with reinforced polypropylene locking clips for long-term structural reliability, delivering a maximum static load capacity of 113 kg. Core practical functions are tailored to children’s daily use: mechanical segmented seat height adjustment offers 110 mm of total lockable travel, accommodating users up to 170 cm tall, while the backrest reclines to 125 degrees with three suggested lock positions to support upright study posture. Gravity-activated casters automatically lock when a child is seated to prevent unwanted movement, and unlock to enable 360-degree swivel and smooth rolling for easy repositioning when unoccupied. The chair uses a screwless snap-together assembly design with included tools, requiring 40 minutes of setup time per unit. It is well suited for a wide range of spaces: home children’s study areas paired with height-adjustable desks for K-12 homework, dedicated home classrooms for extended remote learning, compact children’s bedrooms, shared tutoring center training rooms, and preschool or early elementary learning spaces. For multi-child households, multiple color options are available to assign individual chairs to each child. Procurement teams should note each unit ships across two cartons, with a total packaged gross weight of 23 kg and 0.26 m³ total carton volume, allowing 135 sets to fit in a 20GP container at 85% space utilization. The child-sized, unbranded design offers flexible deployment for both residential and small-scale institutional learning settings.