Product Overview
The Osprey Ultralight Collapsible Stuff Pack is a smart, on-demand solution for travelers who need extra storage without the added weight or bulk. With an 18-liter capacity, this packable daypack delivers reliable space for day trips, souvenir hauls, gym sessions, or everyday essentials—then collapses into its own internal pocket when not in use. Designed for seamless integration with Osprey’s Ultralight System, it pairs effortlessly with other packing accessories to create a personalized travel setup. Whether you’re exploring city streets, hiking scenic trails, or navigating airport terminals, this lightweight pack expands your carrying options while staying compact and easy to stow. Part of Osprey’s commitment to sustainable innovation, it’s built with eco-conscious materials that reflect a dedication to responsible manufacturing and environmental stewardship.
Key Features
- Ultralight and Packable Design – At just 0.329 lbs (approximately 149 grams), this daypack collapses into its own internal storage pocket, making it easy to tuck into larger luggage, backpacks, or camping gear without sacrificing valuable space.
- 18-Liter Capacity – Provides flexible, on-demand storage for day trips, souvenirs, personal items, or daily carry essentials, giving you extra room exactly when you need it.
- Breathable Padded Shoulder Straps – Mesh-lined straps enhance airflow and comfort during extended wear, helping to reduce heat buildup and shoulder strain, even in warm conditions.
- Dual Stretch Exterior Side Pockets – Secure water bottles, snacks, or small accessories for quick and convenient access while on the move.
- Internal Key Clip – Keeps keys or small essentials organized and within reach, minimizing the risk of misplacing important items inside the main compartment.
- Adjustable Sternum Strap with Emergency Whistle – Improves fit and stability during active use, and includes a built-in safety whistle for added peace of mind in outdoor settings.
- Easy-Pull Zippers with Reinforced Tabs – Designed for quick, reliable access to contents, even when wearing gloves or stashing gear in a hurry.
- Two Webbing Loops on Shoulder Straps – Offer convenient attachment points for carabiners, sunglasses, or other small travel essentials, keeping frequently used items close at hand.
- Sustainable Materials – Constructed with bluesign® APPROVED main body fabric and GRS-certified 100% recycled 40D high-tenacity nylon, supporting safer chemistry and responsible environmental practices throughout the supply chain.
Technical Specifications
- Capacity: 18 liters
- Weight: 0.329 lbs (approximately 149 grams)
- Dimensions (when packed): 7.48″ H x 8.66″ W x 16.54″ D
- Material: bluesign® APPROVED, GRS-certified 100% recycled 40D high-tenacity nylon
- Color: Black
- Includes: Dual stretch side pockets, internal key clip, adjustable sternum strap with emergency whistle, reinforced zipper pulls, shoulder strap webbing loops
Benefits & Use Cases
This pack shines as a versatile travel companion, offering a practical way to expand your luggage capacity without the hassle of carrying a full-sized backpack. Use it as a dedicated daypack for exploring new cities, a lightweight option for short hikes, or a reliable bag for collecting souvenirs on your return journey. Its self-storing design allows it to disappear into your main luggage, making it ideal for carry-on bags, checked suitcases, or as a backup inside a larger backpack. The breathable straps and adjustable sternum strap ensure comfort during longer outings, while the durable, recycled materials reflect Osprey’s commitment to sustainability. Whether you’re on a weekend getaway, a business trip, or an outdoor adventure, the Ultralight Stuff Pack adapts to your needs—providing dependable, on-demand storage that’s ready when you are and out of the way when you’re not.
Important Notes
The Osprey Ultralight Collapsible Stuff Pack is designed for light to moderate loads and is best suited for travel, day hikes, and casual daily use. While constructed with high-tenacity nylon for durability, it is not intended for heavy-duty or technical outdoor activities. Overloading the pack may compromise comfort and performance, as its ultralight frame prioritizes minimal weight over structural support. For optimal fit and safety, always secure the pack using the adjustable sternum strap and utilize the webbing loops on the shoulder straps to keep essentials close. To maintain the pack’s performance and longevity, clean it with mild soap and water when needed and allow it to air dry completely. As part of Osprey’s coordinated Ultralight System, this pack is compatible with additional packing and organization accessories, allowing you to build a fully customized travel setup tailored to your specific needs.
