Piggy's makes baby and toddler socks from American-grown Pima cotton, a long-staple fiber chosen for its softness, strength, and breathability. Founded by parents who struggled to find socks that stayed on and were not made mostly of synthetic materials, the brand blends Pima cotton with OEKO-TEX certified nylon and spandex for a seamless, stay-on fit. Socks are independent lab tested and meet CPSC safety requirements. For every pair purchased, Piggy's donates a pair to a child in a hospital.