Dog Mom Club Crew Sock Cotton, nylon, spandex blend is cut in a classic crew length and topped with a ribbed cuff for a stay-put wear. Super fast order processing - Ships in 2-3 Business Days - Cotton, Nylon, Spandex Blend - Machine wash - One Size (shoe size 7 - 10) Trill Paws is clearly not known for sportswear, but here we make an attempt to make a comfy sock for our fellow dog moms! So sneak in some sport in your life with these comfy, striped socks made with a super soft cotton blend.