I am a size 3-9 and it is just the right size for our son who wears 4Y shoes. I'm not sure where 3-9 comes from. Impossible for a size 9 to wear them, they are perfect for his 4Y foot suggesting they are a bit tight for a size 5 and too small from a size 6 onwards.
Hanes Toddler Non Skid Socks White
31 Review
๐ท๏ธ Super Hero Adventures Spider-Man Boys Toddler 6 pack Crew Socks: Fun and Comfort for Little Superheroes
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6-Pack Jefferies Socks Boys' ๐งฆ Monster Pattern Crew Socks for Better SEO
38 Review
๐งฆ Amazon Essentials Kids' 10-Pack Cotton Crew Sock: Comfortable and Durable Daily Socks for Children"
7 Review
๐ฅ Stay Warm and Active with Rocky Fleece Thermal Underwear Bottoms for Boys
44 Review
Waterproof Cozy-Dry Rain/Snow Pants for ๐ง Kids by JAN & JUL, with Fleece Lining
64 Review
Funny Guy Mugs Tearaway Sweatpants: Playful Boys' Clothing for Fun and Active Days
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๐ Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review