The SmartKnit KIDS Seamless Sensitivity Undies in size Large for boys 10-12 are brand new underwear with a boxer brief style. Made of 98% polyester and 2% Lycra, these versatile black undies are designed to be machine washable for easy care. The seamless construction ensures comfort and sensitivity, making them ideal for active young boys. Made in the United States, these undies come in a pack of one, perfect for everyday wear.