Amazon.com: EZ-Xtend Serabond Bonded #92 Polyester Thread - UV Resistant and Heavy Duty Thread Sewing - Extra Strong Upholstery Thread - Can Be Used On Home Sewing Machines (White, 8 oz Spool)
Coats Extra Strong Upholstery Thread 150yd | Michaels
Amazon.com: All Purpose Extra Strong Heavy Duty Bonded Black Sewing Thread Great for Quilting,Upholstery, Leather, Denim, Marine, Outdoor and Camping Products. T70#69 210D/3PLY 1400 Yards. : Arts, Crafts & Sewing
Coats & Clark Extra Strong Upholstery Thread | Michaels