MEETS INTERNATIONAL CARRY ON SIZE - This standard carry on bag with wheels has exterior measurements of 14 inch length x 9 inch depth x 22 inch height, so it fits in the overhead bin of any US or international airline. You'll never need to check it in! Its heavy duty, hardside material protects your contents and comes in a range of colors, styles and sizes for women and mens luggage options. WORLD'S FIRST BUILT-IN CONNECTABLE LUGGAGE SYSTEM - Collecting baggage is easier than ever! No trolley needed. The patented built-in connecting system fastens up to 6 BAGS to create 1 solid unit in just seconds without purchasing other hooks, links cords, or belt accessories. Simply connect individual suitcases using the quick connecting touch fasteners, connect the pulling strap to the D ring, and go. CONVENIENT TRAVEL FOR FAMILIES & INDIVIDUALS - Navigating a busy airport or station can be stressful, especially if you have kids! With TACH, getting through crowds with multiple bags is easy, as the adjustable pulling strap and 360-degree silent, smooth ball bearing wheels evenly distribute the weight within your smart suitcase. Our durable hardshell luggage glides effortlessly along without tripping or flipping over. EXTRA TOP STORAGE & ELECTRONIC CHARGING PORT - TACH connectable suit cases feature a flat top design for extra storage or seating. Conveniently store your personal item bag or other travel necessities right on top of your roller bag. TACH luggage carry ons also feature an external water bottle holder, 2 charger ports, and an additional pocket for your favorite power bank, so you can keep your devices powered up for those long travel days. ONE PERSON HANDLES ALL BAGS - With TACH luggage, just one person can look after and handle multiple carry-on bags. WATCH THE VIDEO in the images section to see how travel becomes so much easier and efficient! When storing, your TACH luggage set nests inside each other to reduce space. TACH MODE Hardcase Connectable Carry-on Luggage | Double Wheels Rolling Suitcase with Patented Built-In Connecting System & Charger Port | Easily Link & Carry 9 Bags At Once | TSA-Approved Lock (Dark Gray)