Above all, can use big toe to press go up in carpet, after be being pressed rapid restorable, state the density that knit cloth with soft nap and flexibility are better; Or it is a carpet flex.

• 首先，可利用拇指按在地毯上，按完后迅速恢复原状的，表示织绒密度和弹性都较好；或是把地毯折曲。