Aer x Carryology Tokai Sling

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Sling Bag
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LIMITED to 1 Piece for EACH Customer's Purchase

Everyday carry designed for the city.

Aer and Carryology teamed up to create the all-new Tokai Sling, a versatile crossbody bag designed for the city. Inspired by Japanese street fashion, the Tokai Sling features a highly-durable X-Pac™ sailcloth exterior, a self-securing Fidlock® V-BUCKLE, and a high-visibility ripstop nylon interior. Explore the city in style with the all-new Tokai Sling.

Limit one per order. Any order with more than one will be cancelled.

Catching Aer

From the day they released their very first bags on Kickstarter, we've been fans of the San Francisco-based Aer. There simply aren't very many brands on earth that balance daily functionality with clean minimal aesthetics, like these folks. That complementary dualism and contrast still fascinates us today.

And their carry has been long-time favorites of our readers, earning Aer a slew of Carry Awards wins across the board.

So Aer was a brand at the top of our 'dream list', and when the project was greenlighted, boy was it a moment. It felt like we were floating on… well, you get it. And we were amped to hit the design table with Allen Choi, the founder and master designer behind it all.

The Year of the Sling Continues...

2020 has been a weird one for all of us. And our methods of carrying have evolved to deal with the madness, with most of us carrying less and transiting in shorter bursts. So Collab X would be a sling from the very beginning.

Yes, AER has two different slings to choose from: the Day and the City. But we had our answer. The City Sling was the compact choice, with a cleaner stealthier silhouette. Originating from the Japan-exclusive collaboration with Oshman’s Sporting Goods, and then sprouting into the US market (thanks to unwavering demand) later, it had that street vibe we wanted to play with.

Factor in that the City Sling was a Carry Awards top 3 award winner this year, and there was no question. We started gathering our favorite fabrics, hardware bits, and wiped the slate clean. No holding back.

From City to Streetwear

Like the name suggests, the City Sling is designed for the city dwellers, the urban travelers, the commuters, humans peacefully skating through cathedrals of glass and concrete. We began focusing on this vibe. Mix this with AER's continuing growth and success in Japan... we thought... ok... let’s take this to a Japanese city. Tokyo. The bustling streets of Harajuku. The balance of modern/history, loud/quiet, calm/rush, black/white, rugged/elegant, patterns/solids, yin/yang.

It would be inspired by all of these, and give a nod to Japanese streetwear. A culture that continues to inspire us here at Carryology HQ.

And it would be named "Tokai" (都会), meaning "urban" or "city".

Upping the X

We began our experiments with the outer fabric. We had originally discussed the options of Dyneema and other exotic fabrics. But we kept returning to Dimension Polyant XPac, as Carryology and AER are both fans of the strong, waterproof, and durable laminated fabric. But, this was an ode to the city. It had to have its ruggedness tuned way up. So we couldn't just go with any old XPac... we went with X50. For extreme durability and that airy reduction in weight.

The original plan was to make the entire Tokai Sling from X50 MultiCam Black...or blend camos for a real statement piece, but that was just too loud. Again, we looked back to our inspiration... the balance of subtle and style. So we pulled back and opted to put an all black front face on the sling, with MCB wrapped around the top, bottom, sides, and back. Onlookers see stealth black, while you see the MCB when you sling it around to your chest.

Contrast + Clash = Balance

Like we said, X50 was available in a variety of different MultiCam patterns. And we loved the idea of the loud style details being visible to the user, when they wanted to see it. Discreet meets flashy. For the early prototypes, the front compartment was lined with the original MultiCam pattern in X50 XPac. It wasn't until the very last round that we thought... yin vs yang.

What is the equal opposite of MultiCam Black?

MultiCam Alpine, of course.

So out went the original MultiCam, which was replaced with MultiCam Alpine. Of course, in X50 XPac.

Key Upgrade

While we were in there already... we decided to pimp out the key lanyard, with a Korean-made magnetic "Magic Short" key lanyard with metal keyring. Stronger, more functional and little more badass.

Edges of Hypalon

If you’ve been following what we do, you know we love the technical goodness and weatherability of Hypalon (the stuff used in Navy SEAL inflatable boats). Its matte black looks would work in tandem with the black X50 for a super clean face, and give some variation to the handfeel. And while we were at it, we added a zipper garage in Hypalon too, for that extra notch of weatherproofness.



Not that there is anything wrong with the City Sling's UTX-Duraflex hardware on the sides (for cinching down the load), but... you know us by now. We swapped out the plastic for an all-aluminum Alutica tilt-head tension lock hardware, anodized in black. Fun fact: they have a break strength of 800+ lbs, just in case you somehow carry 1,600+ lbs in you sling.

YKK – All Day

The zipper? YKK AquaGuard RC, originally designed for luggage, used for water resistance and longevity.

Magnetic attraction

Magnets. But how do they work? We'll never know. Fortunately, the geniuses at Fidlock figured that whole "thing" out for us all. And our love for magnets and Fidlock led us to an important design decision, that ended up for a two for one benefit. A Fidlock 40mm V-Buckle was selected because it's a dream to use, it's super strong (70kg break strength), and it only requires one hand to buckle or unbuckle. The added perk? It's 40mm width. So we swapped the existing webbing on the City Sling and opted for a (in our opinion) better suited 38mm nylon strap webbing for the Tokai. Bonus.

The triple secret bonus? The shield on the Fidlock V-Buckle is stainless steel, coated black... acting as perfect canvas to laser engrave our two logos onto.

Less 'Click' Pullers

And the zipper pullers? We had played around with orange Dyneema cord, but it just didn't feel substantial enough. Allen told us that AER had secretly been working on a new zipper puller design, that was burly as all heck and helped reduce ‘click’, and that the Tokai Sling could be the very first to use it. A quick change to orange paracord and it was a done deal.

Signature High-Vis (Plus Ripstop)

Aer and Carryology are both big believers in high-vis internal lining fabrics. And our signature is that high-vis orange pop. We continue to use this colorway, because based on our legit scientific research (I'm honestly not kidding – I had help from NASA engineers and neuro-opthamologists over the span on months when I went down this rabbit hole... I'll have to share sometime). Form following function. So we were happy leaving this bright and bold interior fabric as is, but Allen told us he had found some really nice 210D nylon ripstop in bright orange, which would add just a touch more durability and visual difference between the City Sling and the Tokai Sling. It made total sense!

The Tokai Sling was Ready... or Was It?

Together, we built our dream sling: the AER x Carryology Tokai Sling, based off the legendary AER City Sling. After months and months and dozens of prototypes, we were finished. Michael (based in Melbourne, Australia), Allen (based in San Francisco, California), and myself (based in Austin, Texas) all agreed to hop into our final video call to slap the table and officially send these Tokai Slings off to be made (by the way, you'll see the standard Aer "designed in San Francisco" flight tag replaced with one representing all three cities). We were happy, excited, and finally knew we were at a stopping point before we went too far and screwed something up. To this day, I'm not sure who had the idea... but one of us was holding up the Tokai Sling prototype to their laptop camera, musing how much we all loved the X50 MultiCam Alpine front pocket contrasting against the X50 Black and X50 MultiCam Black fabrics...

"Wait a second! Hold on… We Need Balance…"

Balance, dualism, negative/positive, contrast, opposites. It's yin AND yang. It's not yin OR yang. Then the 'What if' came ... what if we make the Tokai Sling's equal opposite? We'd bring the light from the inside, to the outside. And bring the darkness on the outside, to the inside. Two versions of the Tokai Sling... a stealth black and MultiCam Black version and a bright white and MultiCam Alpine version. Perfectly balanced, as all things should be. Well... except for the quantities.

The Black version will be in very limited numbers, like all our collaboration projects. As for the White version? Extremely limited numbers, one of the rarest collab pieces yet!


  • X50 X-Pac™ and VX-42 X-Pac™ sailcloth exterior by Dimension-Polyant®
  • Self-securing Fidlock® V-BUCKLE
  • YKK® AquaGuard® zippers
  • High-visibility, ripstop nylon interior
  • Quick-access front pocket with detachable keychain
  • Multiple internal pockets for small accessories
  • Adjustable webbing strap for comfort and fit
  • Hidden back pocket for your passport or wallet
  • Imported


  • Length: 12.5" (32 cm)
  • Width: 4.5" (11.5 cm)
  • Depth: 3.5" (9 cm)


  • 2.4 L


  • 0.8 lbs (360g)

Designed for the City

Discover the limited edition Tokai Sling.

A versatile, limited edition crossbody bag designed by the teams at Aer and Carryology.

Constructed with X50 X-Pac™ sailcloth, an extremely durable, waterproof laminate made from 3 layers of hard-wearing materials.

Contrasting MultiCam Black™ interior (front compartment only).

Self-securing, magnetic Fidlock® V-BUCKLE for one-handed operation.

Alutica tilt head tension lock (made from aircraft grade aluminum) for a premium fit and finish.

Woojin Magic Short magentic buckle keeps your keys secure and easily accessible.

High-visibility, ripstop nylon interior helps you quickly find your gear.

Ripstop nylon dust bag offers lightweight protection in storage.

Please make sure all information filled in correctly.

*For any incomplete delivery due to missing/wrong information from customers, we are not responsible for the second shipping fee.

Return Process

With 14 days from the arrival date of your order, you can apply return or exchange for certain products. The product must be brand new, with complete packaging and tagging, and it has not been worn or used. We will not accept products that violate the regulations. Please note that products with final clearance or discount or limited series products cannot be returned or exchanged.


WhatsApp/ Email the product you return and the order number to which it belongs.


Please pack the products properly. Contact the courier company to pick up the parcel or post it in person.


Ship the package to our return address, and send the tracking number WhatsApp/ Email to us.

*Please note: During the promotion period, the return/exchange time may be longer.

Return Rules

Our Return Policy

  • With 14 days from the arrival date of your order, you can apply return or exchange for certain products.
  • The product must be brand new, with complete packaging and tag attached, and it has not been worn or used. We will not accept products that violate the regulations.
  • Products with final clearance or discount or limited series are not included.
  • Products in bundle set should be returning together.
  • No hydration system can be returned due to hygiene problem.
  • Non-compliant products will be returned, and the freight will be borne by the customer.
  • The return shipping cost is borne by the customer, and we will not provide return shipping check label or shipping refund.
  • The customer must assume responsibility before the return package is signed for. Therefore, we recommend that you use reliable and traceable transportation services. We are not responsible for any damage or loss of returned goods during shipping.
  • If you request a refund, the shipping, import taxes and duties in the order will not be refunded.
  • If you request an exchange, we’re not responsible for the returning and second shipping fee.
  • If you receive the wrong goods, defective goods or find that the package is incomplete, please contact us within 7 days from the date of receipt and provide your order number, product photos and other relevant details, and we will be happy to solve it for you.
  • In case of any disputes, Suburban HK reserves the right of final decision. 

Return Address 

2B, 2/F, Lladro Centre, 72 Hoi Yuen Road, Kwun Tong


Refund Method

Suburban HK return center will process the refund after receiving the returned goods. The refund will be based on the payment method used when ordering.

If payment is made by credit card, we will return the refund to your card issuing bank within 3 working days. Please contact the card issuing bank to check when the refund will be deposited into your account.
If you pay with a Suburban Store gift card, the refund will be sent to you via email within 3 working days in the form of a Suburban Store gift card.
If payment is made by bank transfer or cash deposit, we will return the refund to your account bank within 8 working days. If you have not provided your bank information, please refer to the information below. Please contact your bank to check when the refund will be deposited into your account. When the refund is successfully deposited in your bank, we will notify you by email.

Name of Account Holder:
Account Number:
Bank Code

Please note that we will only refund to local bank accounts, and the name of the bank account holder must be the same as the name of the billing contact person for the order.

If you need more information about order changes or returns, you can contact our customer service team at (852) 39545524 from Monday to Sunday, 11:30 am to 8:00 pm. Please prepare your order number.

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