I ordered 6-9 months for my little 10 month old baby (15.5 lbs, 28 inches) because he wears this in regular cotton pants. I had to re-order a size 3-6 which fit him perfectly.
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
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π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
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Waterproof Cozy-Dry Rain/Snow Pants for π§ Kids by JAN & JUL, with Fleece Lining
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π Bold Pack Sleeve Active Hoodie Sweatshirt Set for Boys' Clothing - Stylish and Comfortable!
47 Review