The tag says it's 100% cotton but it's a very dense stretchy material like lycra/spandex and doesn't feel comfortable at all of soft cotton I kept them (probably more out of laziness than anything), but I expected them to be able to sleep in them. I'm sure they aren't very breathable so I don't know how much they can actually be worn. They also say not to tumble dry! I refuse to buy kids/teen t-shirts that can't be dried so we'll soon find out how they hold up because I'm washing them now. :)
πͺ 3T Boys Training Underwear: Comfortable and Durable Toddler Underwear
41 Review
Comfortable & Practical City Threads Underwear: Sensitive-Friendly Boys' Clothing
47 Review
π Russell Athletic FreshForce Protection: Boost Your Boys' Performance with Assorted Clothing
49 Review
π¦ HLMBB Dinosaur Toddler Underwear Training | Boys' Clothing for Easy Potty Training
44 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
π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
46 Review