My 6 year old is tall and skinny and would probably fit a 4T waist if they were long enough. I looked everywhere for jeans. Didn't have to FULLY pull the elastic sides and forget about the elastic waist, they were too big (I tried Levis, Gap, Target brands). These are the ONLY jeans that fit perfectly and are this cheap! Lightweight jeans but they seem sturdy enough to last the season. The only other slim fit pants I've found are Lands End, but they're under $$ so I recommend slim fit pants.
Boys' Basic Skinny Jeans from The Children's Place
41 Review
Ultimate Comfort for Boys: Lee Performance Series Extreme Comfort Slim Fit Jean
41 Review
Classic Levi's Boys' 505 👖 Regular Fit Jeans for Everyday Wear
38 Review
👖 Essential Straight Fit Jeans for Boys: Top Choice in Amazon's Boys' Clothing Collection
47 Review
👖 Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review
🍉 Fruit of the Loom 6 Pair Cushion Ankle Boys' Clothing: Comfy and Stylish Selection for Active Boys
57 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
👕 Bold Pack Sleeve Active Hoodie Sweatshirt Set for Boys' Clothing - Stylish and Comfortable!
47 Review