78%cotton / 20% nylon / 2% spandex Imported MATERIAL:We use 75% polyester,20% cotton,and 5% spandex. The printing socks will stretch a little when you put them on. SIZE INFORMATION:Socks length:16.5 inch,fits men shoes size 6-10,fits women shoes size 8-12. Please check the reference size of our socks before you placing order. FUNCTION:Quality material provides moisture wicking properties,will keep your feet more flexible,breathable and natural,soft and comfortable,absorbent. PREMIUM COMFORT FIT:Light arch compression adds support and stability to reduce foot fatigue hugs your foot and keeps sock in place,smooth toe seam eliminates bulky seams to reduce abrasion and provide extra blister protection. NOTICE:We are print products. the printing socks will stretch alittle when you put them on. the pattern will fade after stretching. so if your calves are too thick,Then you may not buy our socks,because the effect will be bad.