You need to buy a jacket one size bigger. Very warm and looks great too. If your child is 5 years old, take size 8. It will fit. If your child is 7 years old, take size 10. Believe me, it will fit. Don't go any lower or you'll have to return them. Both of my children are of average or thin build.
Insulated Spruce Jacket for Boys by Arctix
62 Review
π§₯ JAN JUL Boys' Waterproof Fleece Lined Cozy Dry Clothing, Jackets, and Coats
58 Review
Adorable Arctix Kids' Dancing Bear Snow Suit Keeps Your Little One Warm and Stylish on the Slopes
56 Review
Red SOLOCOTE Windproof Outwear for Boys Ages 7-8 - Heavyweight SW18018
54 Review
π Bold Pack Sleeve Active Hoodie Sweatshirt Set for Boys' Clothing - Stylish and Comfortable!
47 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review
π₯ Stay Warm and Active with Rocky Fleece Thermal Underwear Bottoms for Boys
44 Review