10 Pack 3.4 oz Leakproof Travel Bottles - Refillable Plastic Cosmetic Containers for Shampoo, Lotion & Cream - TSA Approved Toiletry Bottles for Air Travel, Gym & Vacation Essentials

The TSA limits carry-on liquids to 3.4oz. (100ml) containers, and then only as many items that will fit in a 1qt. resealable bag. These water-tight containers hold exactly 3.4oz.I like that 10 are included, which is plenty for most people (and technically more than will fit in a 1qt. bag.)These bottles come with some self-adhesive stickers for labeling the most common types of liquids (shampoo, conditioner, lotion, etc.) Admittedly, these labels are pretty small and hard to read, so using your own label maker will probably make it easier to read the contents.I did a quick informal test of the seal on these bottles and they did not drip or leak when filled with tap water.These are perfect travel bottles for ensuring you don't run afoul of the TSA carry-on liquid limits.