Constructed of ABS/Polycarbonate blend, a lightweight and durable material for long lasting use; Scratch-resistant, twill texture with nice metallic finish for pop; Four double spinner wheels assure smooth and multidirectional mobility; Expandable to accommodate extra belongings; Top and side carry handles provide comfort when lifting a fully packed case; Roomy interior features elastic tie-down straps and a mesh divider to secure belongings; The TSA combination lock allows you to secure your luggage with your personal code, while letting the Transport Safety Authority (TSA) check your luggage without damaging it;