Genius travel packing tip! Use a knapsack that has a vacuum suctioning feature such as @vacpack.us to gain more space. You can also purchase a mini canister vacuum to do it yourself. This is not an ad. Thanks @crystalcruises cruiseship crew for helping suction the air out of the knapsack. #packingtips #packinghacks #packingcubes #packingforvacation #notanad #travelhack #traveltip #cruisecrew | Cruiseguru