At Amazon, this MeeFar roof cargo bag is $80, a new low against its Amazon all-time low of $89 and below its 90-day average of $126. It holds 21 cubic feet, which the maker says fits 4 to 6 suitcases, and mounts with or without a roof rack.

Straps, door hooks, an anti-slip mat, and a combination lock are included. Shipping is free.

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Features 21 cubic feet of storage, 47" x 35" x 22" Waterproof 800D PVC tarpaulin w/ waterproof zipper & flap Works w/ or without a roof rack on any size car or SUV Includes 10 reinforced straps, 6 door hooks, anti-slip mat, & combination lock Weighs 10.7 lbs. 1-year manufacturer warranty