Simple Custom Premium Business Cards 500 Full color - Blue front-White back (129 lbs. 350gsm-Thick paper),Offset Printing, Made in The USA Printed on very thick paper. premium smooth matte finishing paper 16pt (129 lbs. 350gsm). 3.5"x2.0" 500pcs business cards Full color bothsides Production time 3-4days Please note that "Black, Blue, Red, Green, Pink, Brown, Grey" colors are not recommend choice for frontside of text color.