The 21" carry-on trolley (ULYSSES) B|Y collection from Bric's. This stylish carry-on is made of polypropylene. This is a very strong, durable and light weight material guarantees resistance to shocks and scratches. Handle is a comfortable and ergonomic 3 stage telescopic handle with a press-stud button. Inside you have 2 fully lined compartments. One side with a full zipper section with a mesh pocket. The other side has a stretchable strap to hold all belongings in place and a smaller pocket to hold smaller accessories and a shoe/laundry bag. TSA approved lock built into bag to allow airport security into your bag without damaging your bag using a universal key by TSA security only. USB port built into side of bag allows you to carry your own battery pack to recharge phone or tablet on the go. Expansion zipper allows you to expand your bag up to 2 in for more room in the car or on the way home. **Once bag is expanded the bag is not regulation carry-on size.