✔[TSA Approved]: Each container is 45ml/1.5oz, so that is TSA compliant. You can put it in hand baggage.  ✔[4-In-1 Design]: Unique 4-In-1 refillable travel bottles designed in one case, so you only need to bring a bottle, then you can go travel and camping. ✔[Convenience and Save Space]: 4 different toiletries packed into 1 bottle, make your suitcase more spacious for other things. ✔ [360° Rotatable]: The lid is 360° Rotatable, which can switch to the container you want. ✔ [BPA Free and Durable]: The bottle is made of premium quality and BPA free material, so it is not easy to damage. It can be used for long time.