Urban everyday carry gear often forces a choice between sleek minimalist phone pouches and bulky, over-engineered backpacks. Shenzhen-based outfit AULUMU has built a dedicated cult following by melding futuristic cyberpunk design language with practical digital accessories.

With the AULUMU B01 Urban Transit Gear Sling Bag, the brand makes a bold leap into technical soft goods, delivering an X-Pac sling featuring an external magnetic phone dock.

Priced at an approachable £107, this technical 400g carrier bridges the gap between high-speed mobile accessibility and generous daily storage capacity.

* Materials: X-Pac Technical Fabric (Nylon/Polyester Blend) w/ Polyester Lining
* Capacity: ~2.5L Standard (Expandable to ~3.5L via Zippered Gusset)
* Hardware: German Fidlock Magnetic Quick-Release Buckle & YKK Zippers
* Dimensions & Weight: 30.5 cm H × 18.5 cm W × 1.8 cm D (9 cm Expanded) | 400g
* Phone Compatibility: iPhone 12 & Later Series, Samsung Galaxy S25 Ultra
* Available Colours: Matte Black, Glossy Black, Pulse Green

External Magnetic Phone Mount Engineering

The standout innovation on the AULUMU B01 is its external, detachable aluminium magnetic phone compartment.

Instead of forcing you to unzip the main bag every time a call comes through or a navigation prompt pops up, your smartphone docks magnetically on the face of the sling.

Compatible with the iPhone 12 series and all subsequent models—as well as the Samsung Galaxy S25 Ultra—the mount allows you to grab your phone, tap to pay or check directions, and snap it securely back into place with a satisfying tactile click.

By isolating your device on the exterior, it eliminates tedious searching inside the main compartment while protecting your screen from scratches caused by loose keys or multi-tools.

Moreover, the mount is fully modular, swapping seamlessly between the B01 and its smaller sibling, the B02.

Heavy-Duty X-Pac Fabric & German Hardware

Constructed from lightweight, wear-resistant X-Pac technical fabric, the B01 features an iconic diamond-grid pattern that provides exceptional tear resistance and long-lasting water repellency.

The rigid structure ensures the bag holds its clean, angular shape even when empty.

“By bolting a MagSafe-compatible aluminium mount onto a rugged X-Pac sling, AULUMU has turned traditional EDC storage on its head—delivering instant phone access without sacrificing weather resistance.”

To keep operation fast and effortless on crowded commuter trains, AULUMU equipped the shoulder strap with a German-engineered Fidlock magnetic buckle.

Offering one-handed mechanical locking that automatically engages when brought close together, it guarantees secure carry under load. Corrosion-resistant YKK zips seal off the internal compartments, shielding your gear against sudden downpours.

Adaptable Storage for All-Day Commutes

While the bag sits flat at just 1.8 cm thick in its baseline configuration, an integrated expansion gusset allows the storage capacity to swell from 2.5L up to 3.5L (extending the depth to 9 cm).

This variable layout easily accommodates power banks, passports, compact umbrellas, card holders, and wireless earbud cases without feeling overstuffed.

Feature Detail	Technical & Design Specification
Retail Price	£107 GBP
Primary Fabric	Water-Resistant X-Pac Technical Fabric
Expansion Range	2.5 Litres (Compact) to 3.5 Litres (Expanded)
Locking Mechanism	Fidlock Magnetic Quick-Release Buckle
Internal Protection	Multi-Zone Dividers w/ Anti-Scratch Lining

Internal multi-level dividers ensure every item has a dedicated slot, preventing tangled charging cables and loose clutter.

At £107, the AULUMU B01 Urban Transit Gear Sling Bag delivers an exceptional fusion of cyberpunk styling, smart modularity, and technical fabric performance.

For urban explorers, frequent travellers, and tech enthusiasts looking to streamline their daily carry, it offers an unbeatable vision of modern mobility.

---