This Sleep On It little & big boy's 2-pc. pajama set is a cozy addition to his sleepwear rotation in the colder month. Made from soft jersey that's flame-resistant, this set includes a thermal henley top with long sleeves and a pair of coordinating plaid pants. Fabric and fit are important safety considerations for children’s sleepwear. Sleepwear should be flame resistant or snug-fitting to meet U.S. Consumer Product Safety Commission sleepwear requirements.