Adorable & Super Fun Shutter or Slotted Flashing Light-Up Glasses All Individually Packaged in Protective Casing;Perfect Addition To All Parties & Occasions. Turn Every Party and Gathering Into an Unforgettable Event. Your Imagination is Your Only Limitation: Use at Halloween, Concerts, Parties, Slumber Parties, New Years Eve Celebrations, Christmas & Holiday Parties, 4th of July, Get-Togethers, Masquerades, Costume Parties, Mother's Day, Father's Day, Birthdays, Baby Showers, Pool Parties, Memorial Day, Veteran's Day, Labor Day, Beach Party, For Role Playing, Use as Goodie Bag Stuffers or Party Favors;This Package of 12 Flashing Glasses Comes in 5 Assorted Colors: White, Green, Blue, Pink, & Purple Suiting Everyone's Needs, Styles, Moods, & Preferences. Perfect Assortment of Colors for Males & Females, Both Young, Teen, & Old;Each Pair of Glasses Has an On & Off Switch & A Plastic Insert Which Can be Removed & Reinserted for Hours of Fun & Enjoyment. There is also an on / off switch which can be used to turn off the flashing without needing to reinsert the paper insert;The Frame of the Glasses are Made of Durable Plastic & Batteries are Built in with No Need to Waste Assembly Time (Uses High Quality 3 AG3 Batteries to run (Included) for hours of nonstop fun).