I have a daughter with sensory problems. She hates labels and seams, so she only wears seamless Jefferies socks. They run a size too small for her, so we order a size larger than Jefferies' website says. After washing, they shrink to the size of their shoes. Because they are thin, tennis shoes are more difficult to put on without buckling in the back. For kids who have this problem, I recommend Jefferies' seamless, padded Low Cuts, which are thicker and cozier.
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
Amazon Essentials Little 3 Pack Shimmer Girls' Clothing in Socks & Tights
63 Review
Children Toddler Thermal Cotton Winter Girls' Clothing
58 Review