of this invention are preferably polyamide although other crimpable polymeric filaments such as polyester and polypropylene having about the same luster range as polyamide may be employed any of the generally well known polyamides may be used including polyhexamethylene adipamide 66 nylon polycaproamide 6 nylon and copolymers thereof as stated above these filaments may also be mixed with other natural or synthetic filaments optional amounts of conventional delusterants may also be present in the filaments in general from 0 10 by weight of a delusterant may be utilized for example up to 1 titanium dioxide may be used when polyethylene oxide as described in u s pat no 3 475 898 is used as delusterant it is common to use from 2 10 however this amount is unnecessary in the present invention due to the unique combination of properties produced by utilizing blends of filaments having the specified modification ratios very small amounts of polyethylene oxide provide the desired effect specifically 0 25 1 polyethylene oxide may be used in the filaments and still provide the necessary delustering while polyethylene oxide e g as described in u s pat no 3 475 898 is preferred other conventional delusterants such as titanium dioxide polyethylene etc may be used alone or in combination particle sizes of these delusterants and method of incorporating them into the filaments are those well known in the art and not critical to this invention another essential feature of this invention is that the filaments be crimped this can be accomplished by any of the well known methods for example by the use of a stuffer crimper such as disclosed by u s pat no 2 311 174 other types of crimping devices and mechanisms may also be used such as gear crimping or jet bulking.