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One of the most frustrating parts of traveling is the constant packing and unpacking of personal items from a suitcase. But expert travelers have long known of a secret tip to help maximize space, and keep things organized: packing cubes. These space-saving and portable packs can help keep different types of clothes organized, and divide a suitcase into mini compartments.

For travelers looking to take their packing skills to the next level, Walmart has a nine-pack of Cshidworld Packing Cubes on a flash sale for just $16, a nearly 50% discount from the original price. It even includes additional accessories, like a shoe bag and toiletries holder.

Cshidworld Packing Cubes, 9-Pack $16 (was $30) at Walmart

Courtesy of Walmart

This set comes in a variety of colors, including blue, pink, navy blue, gray, beige, and black. The nine-piece set includes a variety of sizes for larger clothes, smaller undergarments, as well as a personal care and cosmetics organizer that can hang from a hook in a bathroom. These handy cubes can even help cram more stuff into your luggage, making items more compact and therefore smaller. We also love that some of the cubes have ventilation (to help get out all the air), while a few others are waterproof, making them ideal for toiletries.

“Staying organized when traveling is easy as we can place the whole cube into a drawer without needing to fully unpack,” Life Well Cruised’s founder Ilana Schattauer shared with TheStreet. “When traveling as a family, I make sure each person has a different color packing cube set, a simple packing tip that works.”

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Shoppers comment on how the high-quality and durability of the product, as well as the design of the packing cubes helps maximize space and help zip up a suitcase that might otherwise be difficult to close. One shopper even called them “life-changing.”

“I absolutely loved these organizers!” one shopper shared in a review on Walmart’s website. “We took a trip to Baltimore and it fit all my thick clothing and shoes great. Before I brought them my suitcase was stuffed, but after I was able to open/close it perfectly!”

Packing cubes can also help cut down on excess bag fees, by providing a simple way of moving stuff around.

“Packing cubes are an excellent way to redistribute weight between luggage,” CruiseTipsTV’s Sheri Griffiths told us. “Let’s say you find one of your bags overweight at the airport. Rather than paying the weight fee, simply pull out a packing cube and transfer it to a lighter bag.”

If you’re planning a trip this season, or just want to stay prepared, this set of packing cubes is at an unbeatable price, and probably won’t be for long.