3 year old makes 4 in October and I ordered 3 and it's actually a bit small but the 2 year old fits perfectly. I've never washed them either, but the material seems to be very good.
Kid Nation Kids' Tagless Long Sleeve V π Neck T-Shirts 4-12 Years - 2 Packs and 3 Packs
45 Review
The Good Day Lab Clean Shield: Ultimate Comfort and Breathability in Tagless 4-Way Stretch Polo
43 Review
Van Heusen Sleeve Dress Poplin
42 Review
Star Wars, Marvel, and Disney Short-Sleeve T-Shirts for Boys from Amazon Essentials
50 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
46 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
π Bold Pack Sleeve Active Hoodie Sweatshirt Set for Boys' Clothing - Stylish and Comfortable!
47 Review