PROVEN DESIGN, NEW FEATURES-- We've made collecting baggage seamless and efficient by making it connectable! Whether you're using the TACH Patented Design as an individual bag or a solid unit, our durable hardcase glides along with ease. Now, with new features for improved functionality! STRESS-FREE TRAVELING -- Catch a train, car, or flight when you have multiple suitcases with ease. TACH V3.1 features new double wheels for maneuvering over and through multiple surfaces and allowing for more weight capacity while maintaining a smooth motion. The adjustable pulling strap distributes weight evenly, allowing you to quickly and effortlessly cover more ground. CARRY ALL, CARRY ON -- TACH connectable suitcases feature a flat top design, providing an area to place your handheld items. Conveniently carry your purse, jacket, stroller, car seat, backpack, and other travel necessities. The new design also features 2 charger ports, a charger port pocket, and an additional pocket for your favorite power bank, so you can keep your devices powered up for those long travel days. BUILT-IN CONNECTORS -- The patented TACH connecting system fastens up to 9 bags together in just seconds without additional external hooks, clips, links cords, attachments, or other belt accessories. Simply connect individual bags with the easy-attach fasteners and go. SAVE MONEY & REDUCE HASSLE -- With TACH luggage, just one person can handle multiple bags. You’ll be able to travel without paying extra to rent a cart or struggling to keep track of multiple bags. The Revolutionary Connectable Luggage System that Makes Travel Super Efficient & Stress-Free! Trying to handle your luggage AND your kids when navigating a busy airport or station is extremely stressful, and if you're a world traveler, you often have the worry of keeping an eye on multiple bags. Imagine if there was a way to make the whole experience so much easier... Introducing the world's First Built-In Connectable Luggage System from TACH: An interconnecting set of high-quality suitcases that enable one person to handle all the luggage without the need for a trolley. Each unit easily attaches in seconds with the quick connecting fasteners, allowing up to 9 connected suitcases to glide along with a simple pull of the strap. This next level luggage design makes travelling as a family, or travelling around the world less stressful and way more efficient. Discover a more enjoyable travel experience Our advanced interconnected luggage includes the following features: 'TACH TUFF' HARDCASES: Roll up to 9 pieces as one unit Connects and disconnects in seconds Durable, high-grade ABS/PC composite Creates convenient storage for hand held items Water bottle holder TSA locks High-strength ball bearing spinner wheels Extra soft Comfort grip handles Adjustable Pulling strap Dimensions and weights 28” TACH TUFF - Case - 28” x 18.5” x 12 Overall - 30.5” x 19.5” x 12”10.5 lbs. 24” TACH TUFF - Case-24” x 16.5” x 10.5” Overall - 29.5” x 17.5” x 10.5”8.5 lbs. 20” TACH TUFF - Case -20” x 14" x 9” Overall – 22.7” x 14.3” x 9.2"6.5lbs