Ultralight Collapsible Stuff Pack, Black OS

I travel frequently for both work and personal trips, and the Osprey Ultralight Collapsible Stuff Pack has quickly become one of those “why didn’t I buy this sooner?” travel essentials. It folds down incredibly small in my luggage, yet once unpacked it’s surprisingly comfortable and capable for day trips, airport carry-ons, excursions, and even grocery runs while traveling. What impressed me most is how lightweight it is without feeling flimsy. The material feels durable enough for real-world use, and the shoulder straps are far more comfortable than I expected from a pack this compact. I’ve carried water bottles, souvenirs, snacks, a light jacket, and electronics with no issues at all. The zippers are smooth, the stitching looks solid, and overall it feels like a thoughtfully designed product from a brand that understands travelers. This has become my go-to secondary bag for flights because it takes up almost no space in my suitcase but becomes incredibly useful once I arrive at my destination. It’s especially perfect for international travel, theme parks, hiking excursions, cruise ports, or simply keeping extra storage handy during long travel days. If I could change one thing, I wish it had one additional exterior pocket for quick-access items like sunglasses or a passport. The current design is streamlined and minimal, which many people will love, but one more small pocket would make it nearly perfect for travel organization. Overall, this is one of the smartest travel purchases I’ve made in a long time. Lightweight, practical, durable, and easy to pack — exactly what you want from an ultralight daypack.

Never disappointed with an Osprey product! Collapses super small. Easy to stow or attach to a larger bag and perfect for travel where you have to mind how much luggage to bring. The material is thin, but strong. Obviously there is no support with a bag like this but it is a solid trade off for weight and portability. There’s also limited organization and pockets but does have nice water bottle holders and small top zippered compartment. I brought this bag for a caving/tubing adventure in Puerto Rico. It was submerged and dragged through mud and tossed around on the back of a 4x4. Sure it was dirty after that, but a quick wash and it’s just like new. The most important addition’s to this bag compared to others are the adjustable chest strap and light breathable straps. I can tell you I have tested a bunch of similar bags and nothing comes close to the volume this holds, at the weight and compact size, with durable material and features. It’s a definite must have for any traveler. Also, Osprey offers the best warranty around, so if you ever do have an issue I am sure their customer service will take care of you.

Truly light but can hold a lot of items. Placed bottles in side pockets which were secure. Easy to wipe clean! Perfect backpack for travel

Durable, with great simple features. This is the 5th lightweight bag I've purchased in the past few years and I chose this one because: 1. It packs down super small. Wrapped into the top pocket, it becomes the size of a fat wallet. 2. It has water bottle holders on the outside, both sides. So many of the other lightweight waterproof bags don’t. 3. The top pocket is large enough to hold all my misc items, and has two compartment inside too. 4. Osprey quality and long warranty. Have been using it for a couple weeks and love it. Straps are comfortable, bag size is perfect, and the large zipper pulls are something I never new I was missing before but really like having now. Extra tip: if you have a tall water bottle, a small carabiner on the bag's top handle, clipped to the water bottle lid loop (if it has one), really helps stabilize and secure the bottle.

Fantastic ultralight backpack for hiking or as a daypack at your destination when traveling as a tourist. After using a sling bag for a while, I found two problems with it: 1. not quite big enough for bulkier items like a puffer jacket 2. ergonomics aren't so good for carrying more than one water bottle or drink. The sling feels better for specific cases like riding the subway and keeping the bag in front for security and to not bump others. But this ultralight backpack is overall going to better when traveling (mainly on vacation) and you need a daypack to carry only a few items around all day (sunglasses, sunscreen, phone charger, rain jacket, medicines, water bottle, etc.). The Osprey Ultralight Stuff Pack is perfect for reducing the size and weight - only 5.3oz and can stuff into its own pocket in a size about the same as an orange. It barely takes up any weight and space in your travel bags. Has a little key leash and some loops to attach other items. Bought it on sale so its value is tremendous. I like the neutral black color, but part of me wanted the bright orange color (which was not on sale at the time). I think this pack will be perfect for a day hike, on vacation, at theme parks, as an extra bag for a personal item on a plane in case you bought some souvenirs you want to bring home, and various other similar use cases. Definitely recommend this pack.

Lightweight and easily packable bag. I ordered this bag to use as a day pack while leaving/returning to camp when backpacking. It’s the perfect size and holds everything I need for a day journey (extra clothes, drone, gear, water). The system to pack it back inside of its roughly 3”x5” pouch is easy to use. Once loaded with gear the bag is comfortable to wear for the rest of the day. The chest and waist straps make wearing of the bag even better. My only issue is with the life of the bag. The two holes on the bottom of the bag are from taking the bag off, setting it down, and picking it back up. I’ve only used it about 3 times. 1. On a redwoods trip leaving it in the car 2. A 10 mile round trip hike at Alamere falls 3. A 5-6 mile hike to Wapama falls in Yosemite. Not sure if osprey covers this line of bags with their warranty. But if they dont, don’t expect long life from this bag with constant outdoor use.

Need to carry a heavy load? Yeah, this is not that bag. But as a secondary bag when traveling, this is amazing. Compact enough to be out of the way when you don’t need it, and quick to deploy when you need extra space for a day. Even when it is full, the side pockets could accommodate water bottles. A great part of my travel kit.

When ever I travel internationally, I don't check bags, only carryon. So I have a 34L day/backpack and a drawstring lap bag. I needed something smaller to carry around during city walks and day tours but bigger than my lap bag and this fills that gap. Packs away nicely in my buckle/waist pocket in my backpack. Only down side is that it's just a spineless bag and if you have awkward shaped items, it will look and feel awkward. Perfect for holding my puffy jackets for when I get hot. Top pocket is nice to hide wallet and passport in (doubles as the self packing pocket). Nice to have bottle side pockets for bottles and sunglasses and napkins and other random stuff.

This pack is the right size and very useful! Nice that it folds into its own pocket but ever since it arrived it's being used.

Excelente material. Leve, resistente e com os compartimentos que eu preciso.

Came in good condition, can't wait to test the pack on my hikes

Smidig att ha med och skön att bära.

Buen material, aguanta mucho peso para lo fina que es y añadir que es muy cómoda de llevar. Un acierto para llevarla de viaje como un segundo bolso para completar el equipaje; no ocupa nada. No tiene acolchados y con elementos con puntas podría resultar incómoda, pero está claro que no está hecha para llevar ordenadores, cargadores y cosas así.