3-1-1 for carry-ons = 3 ounce bottle or less (by volume) ; 1 quart-sized, clear, plastic, zip-top bag; 1 bag per passenger placed in screening bin. One-quart bag per person limits the total liquid volume each traveler can bring. 3 oz. container size is a security measure. NOTE: This cannot be a bottle that is larger than a 3oz size with 3 oz of liquid in it. The bottle size must not be any larger than 3oz. Consolidate bottles into one bag and X-ray separately to speed screening. Be prepared. Each time TSA searches a carry-on it slows down the line. Practicing 3-1-1 will ensure a faster and easier checkpoint experience. 3-1-1 is for short trips. If in doubt, put your liquids in checked luggage. Declare larger liquids. Medications, baby formula and food, breast milk, and juice are allowed in reasonable quantities exceeding three ounces and are not required to be in the zip-top bag. Declare these items for inspection at the checkpoint. Come early and be patient. Heavy travel volumes and the enhanced security process may mean longer lines at security checkpoints. NOTE: Effective June 2018, you can no longer carry on the plane more than 12 oz, total of any powder or granulated substance. This includes baby formula, protein powders, coffee and spices. Anything over 12 oz must be placed in your checked bag. This includes any purchases made while in the airport! Also note: New rules have been enacted for clearing security at all airports. You are now required to remove all food items from your carry-on and place it in the bins. This includes any gum, candy bars, etc.