One of challenges to be overcome is providing short-fiber nonwoven and loop component with appropriate balance of air-permeability and softness. One of solutions is loop component for mechanical fastener including top layer comprising short-fiber nonwoven and substrate layer comprising short-fiber nonwoven, wherein ratio [average fineness (denier) of the top layer] against [average fineness (denier) of the substrate layer] is 1.5-30, softness of the substrate is less than 60mm in MD direction and less than 50mm in CD direction by 45 degree cantilever method, and air permeability of the substrate is 10 to 100 cm3/sec*cm2 by Frajour type method.待克服的挑戰之一係提供含適當平衡之透氣性及柔軟度之短纖維非織物及環組件。解決方案之一係用於機械緊固件之環組件,該環組件包括包含短纖維非織物之頂層及包含短纖維非織物之基材層,其中[該頂層之平均細度(丹尼)]對[該基材層之平均細度(丹尼)]之比率係1.5至30,藉由45度懸臂方法,該基材之柔軟度在MD方向小於60mm且在CD方向小於50mm,且藉由Frajour類型方法,該基材之透氣性係10至100cm3/sec*cm2。1‧‧‧環構件11‧‧‧背襯層12‧‧‧環層13‧‧‧印花層A‧‧‧壓印圖案