For mattress side decoration sewing, we normally recommend 150D/3, 210D/3(high strength polyester thread) or 210S/2 (spun polyester thread)
High strength polyester thread
Standard: 150D/3 210D/3
Diameter: 0.29mm 0.31mm
Gross weight: 1000g/500g 900g/450g
Net weight: 900g/450g
Length: 17200m/8600m 13800m/6900m
Spun polyester thread
Standard: 20S/2
Diameter: 0.38mm
Gross weight: 173g/400g
Net weight:160g/380g
Length: 2800m/6500m