【AVOIDING BAGGAGE FEES】This 18x14x8 inches underseat carry on bags features specialized snap buttons at both ends of the zipper, which easily tuck away protruding zipper heads when fastened, effectively compressing the bag’s volume to meet Spirit and Frontier Airlines' personal item dimensions and avoid carry-on fees. Weighs only 1.21 lbs, perfect for avoiding overweight baggage fees.（PATENT PENDING） 【SPACIOUS & 2 IN 1 WET BAG】: ECOHUB weekender bag offers a 30L main compartment and an exterior zipper pocket for quick access. The duffel can be fold into a wet bag when not in use. It includes a detachable, leak-proof TSA-approved wet bag for toiletries 【TRAVEL-FRIENDLY】: Attach the bag to your suitcase using the trolley sleeve, freeing your hands. Thick nylon webbing handles ensure comfortable carrying without strain, while adjustable padded shoulder straps maximize comfort 【MULTI-FUNCTIONAL Duffel BAG】: This travel duffel bag fits all your essentials and is perfect for travel, weekends, yoga, gym, beach, daily use, business trips, and sports. Use it as a travel tote, carry-on, overnight bag, weekender, gym bag, or hospital bag 【SUSTAINABLE AND GUARANTEE】: ECOHUB personal item bags are made from at least 50% recycled materials, with fabric and lining crafted from 18 recycled PET plastic bottles. The water-resistant, lightweight fabric, combined with heavy-duty SBS zippers and reinforced ripstop stitching, ensure durability for any adventure. If you have any concerns, reach out through your order. (Patent Pending) This 18x14x8-inch underseat Duffel bag is crafted to meet most airlines’ personal item size requirements, featuring specialized snap buttons at the zipper ends that neatly tuck away protrusions to optimize volume—perfect for avoiding excess baggage fees. Weighing just 1.21 lbs, its lightweight construction ensures you stay within weight limits without compromising on storage space, making it ideal for budget-friendly travel, weekend getaways, or daily use. Inside, a spacious 30L main compartment holds clothing, shoes, gadgets, and travel essentials, while an exterior zipper pocket provides quick access to items like phones, tickets, or keys. The bag’s innovative 2-in-1 design includes a detachable, leak-proof wet pouch—perfect for storing toiletries, damp swimwear, or gym clothes—keeping dry and wet items separated. When not in use, the Duffel folds into a compact waterproof pouch for easy storage, making it a smart choice for space-saving organization. Designed with traveler comfort in mind, a trolley sleeve slides smoothly over luggage handles for hands-free carrying, while thick nylon webbing handles and adjustable padded shoulder straps offer versatile carrying options—whether you prefer to tote it by hand, sling it over your shoulder, or wear it crossbody. The water-resistant fabric protects contents from spills and light rain, ensuring durability through airport rushes, gym sessions, or beach days. This multi-functional Duffel adapts seamlessly to every lifestyle: use it as an underseat carry-on, weekend travel bag, gym tote, yoga companion, beach essential, or daily organizer. Its adaptable design makes it suitable for business trips, overnight stays, sports activities, and more—effortlessly transitioning from practical to stylish.