2.5 year old is a size 7.5c so I took an 8, was a little nervous as most reviews said you need 1-2 sizes up but they fit him perfectly! For a size reference, he wears a 7c in Crocs.
The 9 would probably fit too, just roomier in the toe box and might last longer, but I'm glad I got the 8.
π Mishansha Resistant Anti-Skid Boys' Outdoor Climbing Shoes
66 Review
Boys' Outdoor Shoes: Merrell Chameleon Access Waterproof Boots
54 Review
Stay Dry and Stylish: Biacolum Sneakers Hiking Waterproof Walking Boys' Shoes for Outdoor Adventures
51 Review
Merrell Steps Ridge Hiking Toddler Boys' Shoes
52 Review
Quick-Dry Closed-Toe Water Shoes For Boys & Girls - Ideal For Aquatic Sports - Toddlers & Kids Size - HOBIBEAR
51 Review
Non-Slip PIZOFF Toddler Water Shoes: Quick-Drying Aqua Socks For Beach, Swimming, And Walking Adventures!
3 Review
π Jordan Youth Air 5 Retro GS 440888 600 Raging Bull 2021 - Size: Unleash Sneaker Style!
5 Review
π Ultimate Footwear for Active Boys: Basketball Comfort Sneakers - Breathable & Non-Slip
3 Review