"Material" : High-temperature resistant polyester filament "Size" : Due to the special machine production of the material, the finished product has a certain elastic range. A width error of ± 1 to 3mm is within the normal range. If the buyer has strict requirements for the size, please contact the store first before placing an order. Features: Elastic, not prone to deformation, and an environmentally friendly product. We hope our products will add the finishing touch to your success!