My son wore these brand new ones to his daycare for a day and they are already pilling quite a bit.
I'm not sure how well they will hold up over time. The small size suits him (he is 3.5 years old and weighs 31 pounds).
Thermajane Girl's Cozy and Comfy Thermal Underwear Long Johns Set with Fleece Lining
46 Review
Dancina Toddler Leotard Flutter Sleeve Girls' Clothing for Active
55 Review
Eocom Pairs Childrens Winter Animal Girls' Clothing
64 Review
Pack Athletic Performance Basketball Drawstring Girls' Clothing
48 Review