Are these travel bottles TSA approved?

Most of the bottles here are 3 oz (100 ml) or smaller, which fits the TSA 3-1-1 liquids rule for carry-on bags. Several listings specifically advertise TSA-approved sizing, but the rule is about volume per container and the total quart bag, not any official certification, so any bottle 3.4 oz or under that you can fit in your quart bag qualifies.