This seems to work less than the usual dress size charts from all other clothing companies, so use caution. I would order a size up to wear for more than one season. Also, children grow up a lot and quickly.
Soft Brushed Fleece Crewneck Sweatshirt for π Boys and Girls 4-12 Years - Kid Nation Kids
42 Review
Kid Nation Kids' Tagless Long Sleeve V π Neck T-Shirts 4-12 Years - 2 Packs and 3 Packs
45 Review
Boys' Long-Sleeve Disney Star Wars Marvel T-Shirts by Spotted Zebra
46 Review
Van Heusen Sleeve Dress Poplin
42 Review
Funny Guy Mugs Tearaway Sweatpants: Playful Boys' Clothing for Fun and Active Days
49 Review
π₯ Stay Warm and Active with Rocky Fleece Thermal Underwear Bottoms for Boys
44 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review