My granddaughter is 2 years 8 months old and has size 6 shoes and boots. The socks fit perfectly, I am her boots. They are too fat for their sneakers and shoes. We went for a walk in the fresh air, and from her usual socks with sneakers, her feet were freezing. I couldn't find warm socks anywhere so I decided to look on Amazon! The socks are nice, they keep the legs and lower legs warm. Very slippery on hardwood floors, but has non-slip socks and slippers at home. I recommend these socks to everyone! Thank you!