7 year old (who usually wears a medium top and 8H bottoms) wears a size 11/12 and could probably use a size 13/14 for more instep freedom but legs are probably too long. I cut out the mesh lining because it went up and the instep was too short. My son has complained that the lining is uncomfortable and the suit slides down to reveal a tear! Removing the liner greatly improved the fit and now he loves it. So I would buy them again and remove the lining because I don't like the oversized baggy swimsuits for boys that are currently on the market and I don't like the tight jammers. After a lot of searching over the years this is the best we have found which is why they get 4 stars. We have a navy blue tiki style and we love this color. He wore a ton of it with very little fading/pilling.
Pineapple Print Medium Boys' Spotted π Zebra Shorts - Trendy Clothing for Kids
52 Review
π Stay Safe in Style: Kanu Surf Boys' Protective Rashguard in Charcoal
44 Review
LUCOWEE Anti Chafe Boys Swim Trunks: Boxer Brief Liner & UPF Quick Dry Technology
55 Review
Platinum Rashguard for Boys by Kanu Surf
54 Review
Waterproof Cozy-Dry Rain/Snow Pants for π§ Kids by JAN & JUL, with Fleece Lining
64 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
46 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
π Bold Pack Sleeve Active Hoodie Sweatshirt Set for Boys' Clothing - Stylish and Comfortable!
47 Review