PURPOSE: To provide a polyester inlay having high strength and suitable for strip material made of a reinforced filament polyester non-woven fabric reinforced with a sheet of parallel reinforced yarn made of polyester.

CONSTITUTION: A filament reinforced non-woven fabric strip material reinforced with a sheet of parallel reinforcing yarn has a polyester yarn of the non-woven fabric sheet, 20-200 g/m2 basic weight, parallel reinforced yarn made of polyester and a same breaking elongation as that of the non-woven fabric polyester fiber. The non-woven fabric is preferably a strip material using polyetylenephtalate filament.