Helium Sky 2.0 Trolley Tote Carry on size fits in the overhead compartment and underneath the seat of most u.s. Domestic airlines. Lightweight and durable micro ballistic fabric with vapor barrier for long lasting use Two front zippered pocket offers extra storage for small items and last minute add-ons. Main compartment comers with tie-down straps for overnight packing Holds a 15.6 computer and has a wet pocket. Smart band slide over the handle tubes of a larger suitcase for easy mobility. Telescoping pull handle with "one hand operation" push button to lock and release Easy to grab bottom handle is great for overhead compartment or car trunk lifting. Protected and recessed velocity in-line skate wheels. Worldwide limited 10-year warranty 17x7x13"