Athalon's "Onboard" Convertible Boot Bag is loaded with features to suit your active lifestyle.Patented features make this the perfect travel piece. Fits most commercial airline overheads. Constructed of a water-resistant Honeycomb Hex rips-top body fabric. Filled with numerous unique features that include a Hideaway Helmet Sling that clips to the front of the bag. Hideaway Back Straps are fully padded and include a sternum strap. It's a Backpack: carry in a north/south direction with its hide-away backpack straps. It's a Carry-All: carry horizontally with detachable shoulder strap (included). There is Deluxe Contoured Back Padding with Airflow to minimize perspiration. There are Top & Side Ergonomic Grip Carry Handles for versatile carrying options. The Over-Under Section is Great for organizing boots or protecting equipment with fold-up adjustable/collapsible dividers & protectors. There is an Interior zip-around trap door allows the bag to become adaptable for larger items. The Bottom section has Air Vents for ventilation of ski boots and shoes. Also has a Side Organizer pockets for lift tickets, boarding passes, keys, etc. The top section features a full three-sided access opening, mesh with wall pockets, port for cords/cables.Features:Patented features make this the perfect travel piece.Fits most commercial airline overheads.Honeycomb Hex rip-stop body fabric.Hideaway Helmet Sling clips to front of bag.Hideaway Back Straps padded with sternum straps.Backpack: carry in a north/south direction with its hide-away backpack straps.Carry-All: carry horizontally with detachable shoulder strap (included).Deluxe Contoured Back Padding with Airflow to minimize perspiration.Top & Side Ergonomic Grip Carry Handles for versatile carrying options.Over-Under Section: Great for organizing boots or protecting equipment with fold-up adjustable/collapsible dividers & protectors.Interior zip-around trap door allows the bag to become adaptable for larger items.Bottom section with Air Vents for ventilation of ski boots and shoes.Side Organizer pockets for lift tickets, boarding passes, keys, etc.Specifications:Size: Medium - Meets carry on requirements of most Major Airlines. Fits most commercial airline overheadsExterior Dimensions: 20 x 13.5 x 10.5Linear Inches: 44Weight: 5 lbs.Capacity: 2835 cu. in.Material: Honeycomb Hex Rip-stop PolyesterWarranty: 5 Years Athalon Onboard Convertible Travel Boot Bag