Rocket Bag — a versatile modular crossbody bag
Rocket Bag is a versatile crossbody bag made from durable, wear-resistant UltraGrid and Ultra materials by Challenge Sailcloth. It combines smart interior organization with a modular design.
Its design draws inspiration from Japanese bags, known for blending different materials, textures, and color accents. Thanks to swappable elements and extra modules, Rocket Bag can be tailored to your own needs and style.
The bag has a 5.5L capacity, an expandable bottom, and multiple pockets for gadgets, accessories, and everyday items. Even so, it keeps a compact shape when not fully loaded.
Organization and functionality
The front compartment features a deep pocket, a mesh pocket with an elastic edge, two accessory pockets, a removable key carabiner, and elastic holders for small items.
The main compartment is designed for everyday essentials, gadgets, and a change of clothes. Inside, you’ll find mesh pockets, including a wide zippered pocket, additional compartments, and elastic accessory holders.
The expandable bottom lets you increase the bag’s capacity depending on what you’re carrying. If needed, it can even fit a MacBook Pro 14″.
The back pocket has a soft inner lining for storing a smartphone or compact tablet.
External organization includes removable reflective cords for attaching an umbrella or jacket, hidden elastic holders, side loops, and a MOLLE system for extra accessories. Black, orange, and lime green cords are included.
The back also features a hidden carry handle.
Modular system
The Rocket Bag features the MOLLE system, allowing you to securely attach additional accessories and modules.
Two modules were designed specifically for this bag:
Feeder — an external mesh holder for a thermos, travel mug, umbrella, or other items you want within easy reach.
Pouch — a compact organizer with an inner pocket and MOLLE system. It opens outward, with special latches holding it securely in place.
Both modules are sold separately, letting you expand the Rocket Bag’s functionality to suit your needs.
Material
The Rocket Bag is made from durable, wear-resistant UltraGrid and Ultra fabrics by Challenge Sailcloth.
UltraGrid is used for the main body of the bag. It’s a lightweight, ripstop-reinforced fabric that resists tearing, wear, and mechanical damage.
Ultra is used on the bottom of the bag. This material offers excellent resistance to mechanical damage and tearing. Over time, characteristic creases may appear on its surface — these don’t affect durability or functionality.
The bag features 8mm YKK AquaGuard zippers with a water-repellent coating and a leather Blackpack tag.
What’s included
The Rocket Bag comes with removable reflective elastic cords in three colors — black, orange, and lime green.
The bag supports two types of straps: standard Blackpack straps for waist bags and Flex Bag, as well as straps from Daily Carry Bag, Street Pouch, and other compatible models.
Straps and extra modules are sold separately.
Discover how the Rocket Bag came to be, where its Japanese character comes from, and how it evolved from a 3D model into a finished bag — in the Blackpack founder’s article, “How We Created the Rocket Bag.”
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