This set made from extra durable ABS, keeping your belongings are safe and secure throughout your travels. Mounted TSA combination lock provides peace of mind when checking cases through security. All the suitcases are fully lined, so that your items have that extra bit of protection within the case. Padlock hole on luggage zips will also give you piece of mind that your goods are safe and secure at all times. The luggage has a mesh pocket so you can conceal even more items within the case. Boasting an extending telescopic handle and 4 wheels per suitcase, this Premium Luggage Set makes transport effortless. Should you prefer to carry your case, there are handles with ergonomic grips on the top and side of each case. Please check that the sizing of the cabin case (small suitcase) meets the sizing requirements for your chosen airline. Suitcase Size Small- 15.4 x 8.7 x 22.4 -inches Medium- 17.7 x 9.8 x 26.4 -inches Large- 20.9 x 11.4 x 30.3’’(12.6in when it is expandable) </br> </br> </br> <b>Features of the luggage </b></br> 28inch is expandable for up to 15% additional packing capacity; 20inch is perfect carry-on, 24inch is ideal for personal or business trip. </br> </br> <b>Handle: </b> 3-step 100%pure aluminum telescoping handle for comfortable maneuvering. </br> <b>Wheels: </b> four spinner wheels allow the suitcase to move seamlessly through 360 degrees of motion. </br> <b>Interior: </b> The interior is fully lined with multi-use organizational pockets make it easy for packing clothes. </br> <b>TSA Lock: </b>TSA lock for peace of mind. </br> </br> <b>Suitcase Size</b> </br> Small- 15.4 x 8.7 x 22.4 -inches </br> Medium- 17.7 x 9.8 x 26.4-inches </br> Large- 20.9 x 11.4 x 30.3’(12.6in when it is expandable) </br> </br> <b>Capacity: </b> 20in38L , 24in60L, 28in 93L(110L when it is expandable) </br> <b>Weight: </b>20in 6.6lbs 24in8.3lbs 28in11lbs </br> <b>Travel days: </b> 20in1~4days 24in4~7days 28in 7~9days </br>