Introducing the Battery Powered LED Light Up Christmas Tree Snow Flakes Winter Wonderland Fanny Pack. This would even make Rudolph jealous. Looking for something to top those Ugly Christmas Sweaters, the Light-up LED blinking light fanny pack makes a great gift for your school or office Secret Santa. White Elephant, Yankee Swap or Dirty Santa gift exchange. The best gift for any hardcore Christmas enthusiast. Pack is 9 x 5.5 x 1", strap adjusts from 28 to 44". Includes 2 CR 2032 batteries.