Explore aulumu sling bags designed for everyday carry, travel, and urban movement. Built with technical materials, modular organization, and quick magnetic phone access, the B01 and B02 rethink how a crossbody bag works around the devices and essentials you use throughout the day.
The B01 is ideal for full commutes and all-day use, while the B02 is designed for minimalist, quick trips with just essentials like phone, passport, and cards.
The metal magnetic compartment is detachable and can be freely combined between the B01 and B02 models. This allows you to switch bag combos based on your daily needs or combine the two bags into a more comprehensive urban mobility system.
One modular magnetic system, two approaches to everyday carry. Choose between expanded everyday storage and ultra-light quick access depending on how far — and how light — you want to travel.
| FEATURE | B01 Urban Transit Gear Sling Bag | B02 Urban Quick-Access Phone Sling Bag |
|---|---|---|
| Best For | Everyday carry, urban exploration, commuting and short trips | Quick outings, travel, airports and minimal everyday carry |
| Capacity | Approx. 2.5L–3.5L expandable storage | Approx. 0.3L compact storage |
| Carry Style | Versatile urban sling bag with organized storage | Minimal phone sling bag for essential items |
| Typical Carry | Phone, power bank, cards, compact gadgets, small umbrella and other everyday gear | Phone, passport, cards, keys and other small essentials |
| Magnetic Phone System | Detachable external magnetic phone compartment | Detachable external magnetic phone compartment |
| Material | X-Pac technical fabric | X-Pac technical fabric |
Traditional sling bags focus on putting things inside. The aulumu Urban Gear Series is designed around how often you actually need to access them — especially your phone.
The B01 and B02 feature a detachable external metal phone compartment designed to keep your phone accessible without repeatedly opening your bag. Take it out when you need navigation, payments, calls, or photos, then return it to the magnetic mounting position when you're done.
Both sling bags use X-Pac technical fabric, recognized by its distinctive diamond-patterned reinforcement structure. Lightweight, durable, and water-resistant, it gives each bag the structure and performance needed for frequent urban use.
The aluminum magnetic phone compartment is detachable and can be moved between compatible B01 and B02 bags. This modular approach lets you switch from a larger everyday crossbody bag to a compact phone sling bag while keeping the same quick-access system.
From YKK zippers and Fidlock magnetic buckles to adjustable shoulder straps and dedicated storage zones, every detail is designed around everyday carry. Whether you're moving through the city, traveling, or heading out with only the essentials, the system adapts to the way you carry.
The B01 Urban Transit Gear Sling Bag is the larger option in the series, combining an expandable approximately 2.5L–3.5L capacity with multi-compartment organization. It is designed for people who want a compact crossbody bag without giving up space for a power bank, cards, small tech accessories, a compact umbrella, and other frequently used gear.
The B02 Urban Quick-Access Phone Sling Bag takes the opposite approach. With approximately 0.3L of storage, it is designed around the essentials: your phone, passport, cards, keys, and small everyday items. Its compact profile makes it ideal for short trips, airports, city walks, and moments when a larger bag simply isn't necessary.
Follow these care recommendations to help maintain the appearance, materials, and performance of your bag over time.
Wipe the bag with a soft, slightly damp cloth. For stains, use a small amount of neutral detergent, then allow the bag to air dry naturally in a cool, well-ventilated area.
Do not machine wash, tumble dry, or expose the bag to prolonged direct sunlight.
Avoid bleach, strongly acidic or alkaline cleaners, and high-strength solvents to help protect the fabric and hardware.
If the bag gets wet from rain or splashes, wipe it dry promptly. When storing it for an extended period, keep it in a cool, dry place and avoid compression that may cause deformation.
Keep the magnetic surfaces clean and free of metallic particles such as iron filings or sand. Before use, ensure your phone or accessory is properly aligned with the magnetic area.
Avoid prolonged exposure of YKK® zippers and the FIDLOCK® buckle to sweat, moisture, or dirt. Wipe them clean and dry after exposure to help maintain smooth operation and reliable locking performance.
The aulumu mag mount bag series, including the B01 and B02 sling bags, use a detachable aluminum magnetic phone compartment positioned on the outside of the bag. Magnetic alignment helps position the compartment, while the attachment structure keeps it secured to the bag. This allows your phone to remain easily accessible without repeatedly opening the main storage area.
The B01 and B02 use X-Pac technical fabric together with hardware including YKK zippers and Fidlock magnetic buckles. The X-Pac material is lightweight, durable, water-resistant, and recognizable by its reinforced diamond-pattern structure.
Choose the B01 Urban Transit Gear Sling Bag if you need room for a power bank, cards, small electronics, a compact umbrella, and other everyday gear. Choose the B02 Urban Quick-Access Phone Sling Bag if you prefer minimal carry with only a phone, passport, cards, keys, and small essentials. Since the magnetic compartment can be used across the compatible B01 and B02 system, the two bags can also work together for different types of trips.
The current detachable magnetic metal compartment is designed for the iPhone 12 series and later iPhone models, as well as Samsung Galaxy S25 Ultra. Other phone brands and models are not currently supported.
The X-Pac fabric provides water resistance for everyday conditions such as light rain and splashes. However, because seams, zippers, and openings are not completely sealed, the bags should not be considered fully waterproof or used unprotected in prolonged heavy rain or underwater conditions.
Yes. The B01 works well as an everyday carry or travel sling bag when you need additional organized storage. The B02 is better suited to lightweight travel and short trips where quick access to a phone, passport, and cards matters more than overall capacity.
