I bought size 1-3 for 2 1/2 years. old granddaughter. Her foot length is about 5.5-6 inches and she usually wears size 6.5T shoes. These socks are moderately thick so I had to increase the size of the boot by 1/2 to accommodate the thicker socks. They're a little big on her, but not too big. She could definitely wear them all winter and spring if she has to. They're not as soft as Smartwool, but they don't itch and they're not as expensive! The colors match the picture quite well.
Merino Wool Hiking Socks for 🧦 Kids - Pack of 3 by MERIWOOL
60 Review
Amazon Essentials Little 3 Pack Shimmer Girls' Clothing in Socks & Tights
63 Review
Warm and Soft Wool Socks for Kids - Cute Animal Design, Thick Thermal Crew Socks for Children and Toddlers in Winter
43 Review
SKINS Unisex Essentials MX Compression Calf Tight
49 Review