Bought this for a 4.5 year old and ordered an XS (luckily got it instead of a 5T) and it fits him. My son is not very tall and weighs about 43 pounds and size XS fits him. It was cut close enough to his body that it didn't ride up, but most importantly it offered excellent sun protection. He was in the sun from 10 a.m. to 6 p.m. and never complained that he felt unwell and had not burned himself. I would buy again but be careful with the size. UPDATE REVIEW: Bought 5 months ago and already used a size up. I just bought a small one for my little friend. I had a great experience the first time which made it easy for me to order again.
π Kanu Surf X Large Boys' Swim Rashguard Sleeve - Premium Protective Clothing for Swimming
43 Review
Pineapple Print Medium Boys' Spotted π Zebra Shorts - Trendy Clothing for Kids
52 Review
Platinum Rashguard for Boys by Kanu Surf
54 Review
π©³ Beautyin Toddler Boy's Swim Trunks: Printed Swim Shorts for Quick Dry Beachwear
46 Review
π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 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
Waterproof Cozy-Dry Rain/Snow Pants for π§ Kids by JAN & JUL, with Fleece Lining
64 Review