I use this as my 3rd secret personal item on every flight. I just swing it around and it goes undetectable under my carry-on backpack. Sits right on my bum... wait is that why they call it a bum bag?!
## Technical Details
**Weight (g)**
125 g | 4.4 oz
**Dimensions**
29 x 18 x 9 cm | 11.4" x 7.1" x 3.5" in (when deployed)
8 x 8 x 5 cm | 3.1" x 3.1" x 2" in (packed)
**Capacity**
4L
**Buy it**
$44.99 @ <a class="btn">Matador</a> | $44.99 @ <a class="btn">Amazon</a>
## WTF Details
The [Matador Refraction Packable Sling](https://www.matadorequipment.com/products/refraction-packable-sling) is an ultralight, minimalist sling bag designed for travelers who want a compact everyday carry option that packs down to nearly nothing. Built with Matador's signature waterproof materials and thoughtful design, it's meant to be your go-to bag for exploring cities, running errands, or as a personal item on flights. Now, let's take a closer look at the features, performance, pros, and cons.
<img src="https://res.cloudinary.com/shecodez/image/upload/v1675292192/vvifi_fyi%20blog/Matador-Refraction-Sling.jpg" alt="Matador Refraction Packable Sling">
## Features
- **Ultra-packable design** compresses into its own integrated stuff pocket to fit in the palm of your hand
- **100% waterproof** main compartment with welded seams and YKK AquaSeal zippers keeps contents dry in any weather
- **4L capacity** provides enough space for essentials like phone, wallet, keys, sunglasses, water bottle, and small accessories
- **Adjustable crossbody strap** with quick-release buckle allows comfortable wear on either shoulder
- **Internal zippered security pocket** for valuables like passport, cash, or cards
- **External stretch pocket** perfect for quick-access items like your phone or boarding pass
- **Durable ripstop nylon** with waterproof TPU coating is built to last
- **Reflective details** improve visibility in low-light conditions
- **Backed by Matador's lifetime guarantee**
## Performance
The performance of the [Matador Refraction Packable Sling](https://www.matadorequipment.com/products/refraction-packable-sling) punches way above its weight. Despite packing down to the size of a fist, it expands into a surprisingly functional sling that easily holds daily essentials. The waterproof construction has kept my gear dry through unexpected downpours and humid climates. The 4L capacity is the sweet spot for a minimalist setup: phone, wallet, keys, sunglasses, a small water bottle, snacks, and maybe a light jacket all fit comfortably without the bag feeling bulky. The adjustable strap distributes weight well and stays secure while walking or cycling. The internal security pocket gives peace of mind for important items, while the external stretch pocket is perfect for quick phone access. The lightweight material means you barely notice it's there until you need it. After months of daily use and being stuffed into luggage repeatedly, it shows minimal wear. My only gripe is that the waterproof material can get a bit sweaty against your body in hot weather.
## Strengths & Weaknesses
### Pros
- Incredibly packable and lightweight
- Fully waterproof with sealed seams
- Perfect size for daily essentials without bulk
- Adjustable strap fits various body types
- Internal security pocket for valuables
- Durable construction with lifetime guarantee
### Cons
- Limited capacity (4L won't fit larger items)
- Waterproof material doesn't breathe (can get sweaty)
- Single main compartment lacks organization
- External pocket stretch material wears over time
## Rating 4.5/5⭐
Overall, the [Matador Refraction Packable Sling](https://www.matadorequipment.com/products/refraction-packable-sling) is an excellent addition to any eco-essentialist's travel kit. It nails the balance between packability, functionality, and durability. The waterproof construction and thoughtful features make it ideal for exploring cities, day trips, or as a personal item that disappears into your luggage when not needed. While the limited capacity and lack of internal organization might not work for everyone, it's perfect for minimalists who pack light and value versatility. It's earned a permanent spot in my travel rotation and has replaced bulkier slings for everyday carry. For the price and quality, it's a solid investment that will last for years.
At the time of this writing, the [Matador Refraction Packable Sling](https://www.matadorequipment.com/products/refraction-packable-sling) is available at Matador and Amazon for $44.99. 😊