About these items:Your Ideal Travel and Work Companion: Designed to carry laptops up to 15.6 or 17.3 inches, these rolling laptop bags combine functionality and protection. Whether you're a teacher, office worker, or frequent traveler, these bags ensure reliable portability and versatility.Efficient Storage and Quick Access: Available in both single and dual compartment layouts, these briefcases provide organized storage for laptops, clothing, files, and personal items. Front and side pockets are perfect for water bottles, pens, cables, and other daily essentials.Durable Materials and Weather Resistance: Made from premium fabrics including 600D matte, 420D or 1680D Oxford, and 290PVC composite material, each model is wear-resistant and features a waterproof coating for added protection in unpredictable weather.Comfortable Handling Options: All models come with a telescopic handle offering either 2 or 4 adjustable height levels. Select designs include a detachable shoulder strap or top handle, giving you flexible carrying methods suited for various travel and work situations.Smooth and Stable Rolling: Models with 2 fixed wheels offer stable straight-line movement, ideal for flat surfaces like offices or sidewalks. The 4-wheel version allows for 360° rotation, making it especially easy to maneuver through airports, stations, or tight spaces.Key Differences:The 15.8-9-14.3A model fits 15.6-inch laptops and includes a detachable base, shoulder strap, and two small accessory bags. It has 2 wheels and a 2-level handle. This makes it a great option for educators who need adaptable storage and movement.The 16.5-10.2-15A model supports 17.3-inch laptops and is styled in a chic pink quilted design. Made from 290PVC composite material, it has 2 fixed wheels and a 4-level telescopic handle, balancing fashion and utility for professionals.The 18-14.2-8.7A and 17.5-9.5-16.5A models are both made from premium 1680D Oxford fabric for extra durability. They support 17.3-inch laptops and include front, side, and personal compartments. The 18-14.2-8.7A has 2 fixed wheels, while the 17.5-9.5-16.5A stands out with 4 swivel wheels for superior maneuverability.The 16.5-8-15A model fits laptops up to 15.6 inches and is made from lightweight 420D Oxford fabric. It features 2 fixed wheels and a 4-level adjustable handle-ideal for daily commutes with a slim, durable design.Specifications:The 15.8-9-14.3A model is made of 600D matte fabric with a waterproof coating and comes with 2 wheels and a 2-level adjustable rod.The 16.5-10.2-15A model is crafted from stylish 290PVC composite fabric, features 2 wheels, and offers 4 adjustable handle levels.The 18-14.2-8.7A and 17.5-9.5-16.5A models use heavy-duty 1680D Oxford fabric. The former includes 2 fixed wheels, while the latter is equipped with 4 360° swivel wheels for smooth turns and navigation.The 16.5-8-15A model is made from 420D Oxford fabric and comes with 2 wheels and a 4-level adjustable handle for ergonomic control.Package Contents:For the 15.8-9-14.3A model:1 x Rolling Laptop Bag1 x Padded Shoulder Strap1 x Detachable Base Plate2 x Small Bags1 x Set of Trolley and WheelsFor all other models:1 x Rolling Laptop Bag17.3inch Black