If you’re buying pajamas this winter, you should know the federal safety guidelines:

¢ Most kids’ pajamas must be tight-fitting or made of flame-resistant material to reduce the risk of burns, according to the Consumer Product Safety Commission.

“T-shirts and other loose fitting clothing should be avoided because they can catch fire more easily and cause serious burn injuries,” says commission spokeswoman Patty Davis.

¢ Tight-fitting styles that are not flame-resistant should have a removable hangtag that warns of this, and instructs parents to make sure the garments fit snugly.

¢ Pajamas made of flame-resistant material should have a permanent tag inside with care instructions on how to preserve the flame-resistant properties of the material.

¢ The law covers PJs in sizes 9 months to 14. Other sizes are covered by a general federal standard for flammability.