This 4-ounce travel backpack defies physics with its tiny size

The Ultimate Travel Companion: A Lightweight Backpack That Makes Packing a Breeze

Packing for your dream trip can often be more exhausting than the journey itself. Between airline size and weight restrictions and the need to match your off-duty style, selecting the perfect bag for your travels can feel like a daunting task. However, there’s a solution that simplifies the process and makes it easy to carry all your essentials on trips of any length.

Introducing the reader-favorite lightweight 4Monster backpack. This versatile piece of luggage comes in three capacities — 16, 24, and 32 liters — and is available in 11 color ways and patterns, from floral to camo. With these specs, it’s no wonder why many travelers are choosing this backpack for their next adventure.

Why This Backpack Is a Game-Changer

Light as a Feather

At just four ounces (about half an iPhone), this backpack is so light you won’t even realize it’s there. Your water bottle, emergency sweater, portable charger, and snacks can add several pounds alone — but this bag won’t contribute to that weight. Packing it empty in your suitcase will also add far less weight than a standard backpack. With this thing in tow, you’ll find it easier to log more miles with less weight on your back and shoulders.

Compact Design That Packs Down

This backpack proves that mighty things come in tiny packages. In its 16-liter form, it measures nine inches wide, six inches deep, and 16.5 inches high. That’s enough space for your essentials for a day trip while remaining compact enough to fit in an overhead cabin or beneath the seat in front of you on a flight. What makes it truly magical is how compact it packs down into itself. Once you stuff it into the included (attached!) carry bag, it becomes just 2.8 by 5.1 inches — no more than the size of your fist.

Smart Storage for All Your Essentials

This backpack offers all the compartments and space you need. The roomy main interior compartment is perfect for larger items, while the exterior zip pocket helps organize smaller essentials, spanning nearly the entire length of the bag. Two side mesh pockets provide dedicated space for your water bottle, hand sanitizer, sunscreen, and other frequently used items. They’re also a smart place to separate wet bathing suits or flip flops after a day at the beach.

Durable and Water-Resistant Material

The backpack is made from water-resistant 30-denier nylon, which keeps your valuables safe in the event of a downpour or in proximity of a coffee spill. Think of it as a rain jacket for your belongings. This material also contributes to tear-resistant properties, making it ideal for hiking or camping. Unlike other hiking backpacks with heavy padded straps, this one has breathable mesh straps to keep you cool and dry as you explore.

Real Reviews From Happy Travelers

Don’t take it from us — take it from numerous 5-star fans who won’t travel without this packing essential.

• “Compact and well made. This stores in a very small size which is great for traveling or outings that may need a daypack. It is a lightweight material but is well constructed. Don’t think you can’t tear or break it. Respect it for what it is. The zippers are very smooth, 2 water bottle pockets are generous and stretchy. The straps are basic but sufficient for intended use. This is not for carrying heavy loads. It worked perfectly for me on an 8-day trip to the USVI.”
• “Very nice, lightweight backpack. Material is thin but backpack is sturdy. We took these to Disney to use to carry our purchases & necessities. These bags look small but they hold a LOT of stuff. We had ours packed full. It’s nice that it comes in a little bag that you can throw in another bag so you have extra room for carrying your things. Definitely recommend…especially for vacation.”
• “Perfect packable daypack, and at half the cost of the Herschel pack I’m replacing! Great capacity, and the rip-stock nylon has held up tremendously! Also great to have the wider carrying straps, and the 2 side pockets for a water bottle or umbrella. So great that I ordered a second one for my husband.”
• “I can’t say enough about this backpack… I don’t always take the time to write reviews but I wanted to do this one. The backpack is perfect for travel as a spare bag. It is small when tucked into its bag (which is attached so it won’t get lost). The best part is the quality. It’s super thin and light but soooo strong!”
• “Perfect travel backpack. Easily fits into your carry-on bag for flying. Once at your destination, you have a lightweight bag to carry water and snacks in while you’re out on your adventures. It’s perfect.”