On February 5th, 24-year-old Lauren Self of Madison, Alabama had one of the Little Hotties hand warmers in her back pocket.

Those are the hand warmers that come in a little bag...you crinkle or shake the bag, and they provide you with hours of heat.

But, Lauren says when she reached back to grab the hand warmer, it caught on FIRE.  It burned through her clothes and set her BUTTOCKS ON FIRE.

She was in the hospital for a week for burn injuries.

Now she's suing Implus Footwear of North Carolina, which is the company that makes Little Hotties.  She's seeking unspecified damages AND requesting that the hand warmers are discontinued.

A spokesman from Implus Footwear didn't have a comment on the suit.

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