Traditional knee high, no frills, perfect for boy's dress outfits and knickers. 100% Nylon in most size/colors. Black and some navy are cotton/nylon/lycra with seamless toes for comfort. Pearl color matches perfectly with vintage style knickers outfit. Newborn - 1-3 months - Shoe Size 0-1 Infant - 3-12 months - Shoe Size 1-4 Toddler - 1-2 years - Shoe Size 3-7 X-Small - 2-4 years - Shoe Size 6-11 Small - 3-7 years - Shoe Size 9-1 Medium - 5-10 years - Shoe Size 12-6