The Black High-Back Leather Executive Office Chair presents a formal business profile through its tall black upholstered back, continuous padded arms, stitched panel edges, and polished chrome five-star base. Its overall dimensions are 690 by 762 by 1196 mm, with a 533 mm wide and 483 mm deep seat, a 686 mm high and 533 mm wide back, and a fixed arm height of 762 mm. The black finish and leather or leather-look surface give the chair a coordinated appearance suited to traditional executive interiors, while the chrome base and nylon twin-wheel casters add a refined visual contrast and support mobility around a desk. The seat uses a molded polyurethane foam cushion with a 140 mm padded top and 45 kg/m3 foam density. The back combines layered polyurethane foam with 40 kg/m3 density over a rigid load-bearing board, with 127 mm maximum visible cushion thickness and contoured lower-back padding. Its internal carrier is 12 mm bent plywood or molded composite for the seat and 10 mm bent plywood or reinforced thermoplastic for the back. The arm supports are black painted or powder-coated rigid components with fixed front and rear mounts, and the telescoping gas-lift cylinder is chrome-plated steel of specified procurement grade Class 3. Buyers should verify the bill of materials because unbranded production may offer a full-grain or corrected-grain leather visual while substituting polyurethane, bicast leather, or bonded leather. Functional features include pneumatic seat-height adjustment through a 143 mm stroke using a right-side paddle, 360-degree swivel, and a center-tilt mechanism that reclines the seat and back together to 15 degrees. A single lever locks the chair upright or releases controlled recline, while a rotating knob adjusts tilt tension for users up to 125 kg. The built-in lumbar padding provides contact without adjustable depth, and the fixed arms do not pivot, lift, or change width. The chair is intended for an 8-hour daily task-use target, with a recommended user weight capacity of 125 kg and a static seat load acceptance of 250 kg. It is appropriate for executive offices, managerial workstations, conference rooms, private reception areas, and home offices. For desk planning, it pairs with 720 to 760 mm high executive desks and work surfaces 1800 mm wide. It also supports standardized commercial purchasing when one consistent black chair is used across offices and meeting rooms. Procurement planning should account for one set supplied in two cartons, 40 minutes reference assembly time, 0.26 cubic meter carton volume, and 135 sets in a 20GP container at 85 percent space utilization.