24/7 Use 300LB Mid-Back Chair GO-WY-85- – BizChair
AFO Ergonomic Home Office 3D Armrests and Adjustable Headrest, High Back Breathable Mesh Chairs for Gaming, Executive, Supports up to 300 Pounds, 28.1D x 26.5W x 48.03H Inch, Blue : Amazon.co.uk: Home
BTM 300 lbs High-Back Executive Desk Chair Black PU Leather PC Computer Office Chair : Amazon.co.uk: Home & Kitchen
COLLINS 300 Medium Back Ergonomic Task Operator Office Chair with Fixe — British Office Chairs
Flash Furniture Intensive Use 300 lb. Rated Black Fabric Multifunction Ergonomic Office Chair with Seat Slider
YOUNIKE Office Chair Swivel Desk Chair Upholstered Faux Leather Height Adjustable with Wheels Computer Task Chair Modern Rolling Armless Ergonomic High Back, Loads 300 lbs, Olive Green - Newegg.com
COLLINS 300 Medium Back Ergonomic Task Operator Office Chair with Fixe — British Office Chairs
JHK Ergonomic High Back Office Chair - High Office Chair with Headrest, Swivel Mesh Office Chair with 300 lbs Weight Capacity Adjustable Height for Home Office, Executive, Dark Red (WY-5783-RD) : Amazon.co.uk:
SRJ49710BLK | SertaPedic® 49710BLK Emerson Executive Task Chair, Supports Up to 300 lb, 19" to 22" Seat Height, Black Seat/Back, Silver Base | HILL & MARKES