Ohuhu Expandable Hitch Tray Cargo Carrier Roof Top Bag, Fire Resistant, 15 Cubic Feet EXTRA LARGE CAPACITY: This bag has extra large capacity with 15 cubic feet to store and protect more than you can imagine FIRE RESISTANT: The bag is constructed from premium high-quality material, which is fire proof.ATTENTION:under heavy rain wrapping the cargo bag with a plastic bag is suggested due to the small gap on the zip part EXPANDABLE DESIGN: Expands from 12.7 to 15 cubic feet (from a height of 22" to 26" to better accomodate taller items). Zip closure allows the bag to expand just like expandable luggage 6 STRAPS: This bag is constructed with 6 reinforced straps for optimal and secure attachment COMPATIBLE DIMENSIONS: The bag is perfect for hitch mounted cargo trays with dimensions 47 in (L), 21 in (H) and 22 in (W) expands to 47 in (L), 21 in (H) and 26 in (W)