Factory Video: Made in America. 3:50

Aerostich Letter Bag

SKU: 1905

Availability: In stock


* Required Fields

Product Description


The fastest, most comfortable, versatile and easy to way to carry stuff on a motorcycle, scooter or bicycle. Triangular in cross-section, messenger bags wrap around your back and stay in position when riding. The original ‘Courier’ size holds a small briefcase, a few magazines and some files…plus a tablet and notebook computer with room to spare. It is the most versatile and best selling size.

All are constructed of 1000D PU-backed Cordura nylon, with a seamless bottom for maximum strength and durability. All also feature a bright yellow reinforced PVC waterproof inner lining. Also inside is a usefully-sized organizer pocket (two on the Parcel size) and ‘clip-on’ key loop.

After long use they’ll develop an ‘experienced’ patina that reflects your individual patterns of use and wear. The 2" military-spec nylon shoulder strap adjusts quickly and easily via a cam lock buckle for a secure, comfortable fit. For heavy-load all-day comfort, there is an oversize, removable, load-spreading shoulder pad with a grippy Ultrasude surface (it’s optional for the Letter size).

The flap closes with a wide strip of hook and loop as well as adjustable side-release buckles to accommodate oversized loads. There's also a useful carrying handle on the top center. Visibility is assured with a wide strip of 3M Scotchlite™ reflective running across the flap.

These bags are as simple to put on as a guitar, and easier to learn. Red, black, grey, hi-viz lime yellow, or blue (or limited edition pink in letter, dispatch, and courier sizes only).

Four sizes: Letter (9"×3.75"×9"/12"), Dispatch (12"×7"×12"/18"), Courier (12"×7"×18"/23"), Parcel (14"×9"×18"/26"). Made in USA

Northern Waters Smokehaus Chooses Aerostich Messenger Bags
Day Pack Comparison Chart

In 2014 Abhi, the creator of of bike-urious.com, reviewed his Aerostich messenger bag here.
Two years later in 2016 bike-urious.com contributor Cas V. also reviewed his Aerostich messenger bag here.
Two unique riders in distant locations with different riding patterns with two usefully different stories. No spoiler alert needed…both stories are revealing.


Share Your Review

Share your comments and experience with Aerostich products. Please login (click here) to the Aerostich web site (logging-in is required to post a review). All comments and stories are reviewed before they are posted. More than 99% of all comments will be posted within 24 hours, or 48 hours on weekends and holidays.

If you have comments about product selections, pricing, ordering, delivery, business policies or other customer service issues, please do not use a product review. Instead, directly for a resolution.

Customer Reviews (9)

Another great Aerostich itemReview by Uncle Dave
I also have an Aerostich Dispatch Bag that I use when I'm riding. It's great. I have the strap length set so it "sits" on the rear seat behind me.

I picked up a Letter Bag at a great price that was on-sale on the "factory seconds" list. I use it as a "man purse" on the weekends. I can peal my organizer pocket out of the Dispatch Bag and stick it to the Letter Bag. And it's just the right size to toting around town.
My only complaint: This is a fairly small bag... I think the 2" shoulder strap is over kill. It's too stiff and takes a long time to break-in for a small "purse" type bag like this. I would down-size to a 1" shoulder strap, 1.5" max. But since it's sewn-in for strength, I can't change it at home.

So, 9 out of 10 points! (Posted on 8/21/15)
Good, but...Review by Pat
I purchased this bag to use on my motorcycle commute. Unfortunately a medical issue halted riding, However, my letter bag is used as a "murse", as such it has some drawbacks. It could be about an inch or so wider, that way files will fir without bending. It could be a tad wider so the occasional bulky item will fit better. Velcro, Velcro, there is a yard of the stuff on the front of the bag, it could be re-positioned or reduced in width so it's both easier and quieter to open,
(picture a loud ripping sound in a theater or church). Finally, despite its quirks, it is a beautifully made item,quality materials and workmanship throughout. I am not using the bag on my bike, but I am sure it would perform flawlessly in its intended application. Well done Aerostich. (Posted on 8/13/15)
My "old" letter bagReview by Tom
I've been using a hi-viz letter bag for years....before I retired, it hauled my work-related stuff. Now it hauls my personal stuff (a book, a mini-iPad, and some sundries).What a great way to have a bomb-proof "man purse"!

I noticed that the lining had cracked /peeled in one spot, so I smeared some clear silicone on it. Voila! Waterproof again!

I recently purchased the waxed cotton version (LOVE the feel!), and am holding it in reserve until I need to abandon my faithful hi-viz. Hell...that may not occur within my lifetime! Guess my son will get both of them when I fall off the perch!

Great product! Great value! (Posted on 3/27/14)
Letter BagReview by Conchscooter
As with all things Aerostich this bag is designed by people who ride so you know it works as intended. It was easy for me to buy the smallest bag because I have been living with the next size up (Dispatch) for years and the bag has become indispensible wherever I go. I don't like tank bags and I hate sitting on my overstuffed wallet so my life is in my messenger bag. The arrival of a mini iPad in my life made the downsizing to the Letter bag possible.
When I ride, the bag usually rides in my pannier but if I need to use the pannier to carry purchases etc.. I can slip the bag over my shoulder no problems. Also while riding and stopped at a light I can easily get into the bag unlike a back pack which is inaccessible while riding (and uncomfortable).
I cannot say enough good stuff about these over the shoulder bags. I don't use the stabilizing strap nor the shoulder pad and you will never see me without my Dispatch or Letter bag. Planes, trains automobiles, motorcycles, movies, at work, in motels tents or on ferries, I have my bag within reach. You will too. You can't go wrong. (Posted on 10/11/13)
A Manly - Ohhhh, Lovely Red, Too!- Man PurseReview by Smilin' Kev
I've gotten REALLY tired of trying to find enough jacket pockets - especially in warm weather riding - to hold all the "stuff" that an old geezer needs to have along on a dualsport ride: cell phone; wallet; bottle of water; pillbox; snack bar; a few wrenches and screwdrivers; a compass; a small flashlight; sunscreen; maps; etc. I've got one of the new (2013) Honda CRF 250L "goes-just-about-anywhere" machines and I love it . . . but the accessories market hasn't developed much for it yet and there aren't any small tank bags that fit it well. I was considering "borrowing" one of my wife's old purses and using a belt to sling it as a cross-body bag, but then I spotted this "letter bag." I've used it just once, but that was enough: I love it! It holds an amazing amount of stuff; especially with the help of the accessory shoulder pad, it stays very comfortably in place (even without the extra "stabilizing strap" that I bought with it) on the highway, on washboard dirt roads, and even bucking along forest trails. I picked the red Letter Bag and it complements my 250L and my gear wonderfully. The only downside is that - even though I've shown her the web site and the invoice to verify that it is a "Letter Bag" - my wife won't let me carry the darn thing everywhere! (Posted on 4/9/13)
Great BagReview by KrystalBlue
The letter bag is great. It has allowed me to put alot of what I was carrying in my tank bag into the letter bag and carry them with me.
Letting me use the tank bag for othr stuff besides wallet keys sunglasses etc.
Great purchase really well built (Posted on 4/2/13)
ExcellentReview by MotoGal
This bag has met all of my expectations from such an outstanding company. I bought this bag for use as a purse. When purchasing it, I thought it may be slightly big but I love the size. The quality is unmatched and I can feel good that it's made here in the states. My only teeny tiny complaint is that the key holder on the inside is really strong and sometimes difficult to remove my keys from. I suggest it with the organizer pocket if you're going to use it as a purse. It gives you lots of organizing options. Best of all, it looks great with a motorcycle. (Posted on 8/1/12)
Tough indeedReview by Kim
I carried this bag almost exclusively for about a decade. The lining cracked after a while, but it's otherwise held up very well. I'm not sure you can say that about many other textile bags of this size. (Posted on 6/23/12)
Let me be the first...Review by Kourt
Nobody has reviewed this bag yet?? Let me be the first: I am a long time owner of the Aerostich Courier bag in hi-viz yellow. For a recent trip to eastern Europe, I needed a smaller bag for use as a day bag, carrying a water bottle, food, guide book and extra papers. I purchased the Aerostich Letter Bag for this purpose and was not disappointed. In addition to serving admirably as a day bag, on several occasions this bag also literally saved my ass when I slipped and fell in ice and snow--the bag broke my fall and I was able to continue without injury. Throughout the snow, ice and wet train compartments, the Letter Bag kept my items dry. With the substantial Velcro attached flap I was never worried about the pickpockets on the Budapest subway--it would have been too noisy to try to open the Letter Bag. Now that I've returned, the Letter Bag is the go-to bag for small trips--it even hauled a bottle of wine to a party earlier this week. (Posted on 1/4/11)


Shipping Guide Map
International Orders
Currency conversion rates are close estimates only. All sales are processed in dollars (USD) and conversions are made by card-processing banks on the actual transaction date.
USA Only
ECO Saver delivery times are not guaranteed.
SURFACE and AIR delivery options are guaranteed.
Orders Eco Saver Surface Priority/3day 2 Day* 1 Day* International Air***
under $ 50 $4-$8 $8-$13 $14-$19 $20-$26 $30-$36 $ 20.95-$ 60.95
$ 51-$ 100 $7-$12 $11-$17 $17-$23 $24-$30 $36-$42 $ 25.95-$ 80.95
$ 101-$ 200 N/A $14-$19 $21-$27 $28-$36 $42-$50 $ 30.95-$ 100.95
$ 201-$ 400 N/A $16-$21 $25-$31 $36-$42 $50-$58 $ 40.95-$ 120.95
Over $ 400 N/A $18-$23 $29-$35 $42-$48 $56-$66 $ 60.95-$ 150.95
  • Surface transport only to US addresses.
  • *SATURDAY DELIVERY: Add $15 to 1 Day or 2 Day service.
  • **Add $15 to 1 day or 2 day for Alaska, Hawaii, and Puerto Rico. (Extended area charge of $12 may apply to rural areas.)
  • ***Call for international rates. Depending upon country, most charges will be between these rates. Duties and Taxes are not included in the shipping price. FedEx may charge brokerage fees for some countries. You will be responsible for these charges.
  • AFO/APO Addresses: Orders will be shipped Priority Mail.

All in-stock Aerostich products and RiderWearHouse Catalog items ordered before 2pm CST will be shipped within 2 business days. (If a specific size and color of Roadcrafter suit is not in inventory, we will notify you with an estimated delivery date. Production time varies.) All standard Aerostich items may be sent back for a refund, but the item(s) being returned must be in new condition.

Worldwide Orders

Buying direct from the United States is easy and convenient. Credit cards, fax machines, direct dial telephone service, and air shipping allow easy transactions between countries. For estimates on Duty & VAT costs, visit https://www.dutycalculator.com/calculation/, a third party import duty calculator.

We do not charge or cover duties, taxes or brokerage fees. FedEx may charge brokerage fees for some countries. You will be responsible for these charges.

Our favorite Messenger bag, too...

A Mr. Subjective History on Aerostich Messenger Bags
(Rev 3-2017)

Aerostich messenger bags are one of my favorite Aerostich products. They differ substantially from all of the other kinds of similar bags you’ve seen elsewhere. Essentially, these are a lot heavier-duty.

The primary reason we like messenger bags so much because they are so easy to use for urban and utility motorcycle riding. They go on-and-off quick and are versatile. One of these bags hangs empty, near my riding gear, so I can grab it whenever the destination involves picking up something, or whenever I need to carry something fast without using bungees. Messenger bags are a key technology for every day motorcycling…An invaluable tool.

These bags are the first ever to incorporate advanced, modern materials: Cordura Nylon, nylon webbing, Fastex quick-release buckles and strap adjusters, Velcro and 3M Scotchlight reflective. The only other bags of this type when these were created used basic canvas, and were carried mostly by the document couriers in larger cities.

The official introduction of the first Aerostich messenger bag happened nearly thirty years ago at one of the old Motorcycle Dealernews trade shows. I remember standing at the end of a table in a small private conference room at one of the hotels, giving an informal presentation to Motorcyclist Magazine’s then Editor-in-Chief Mitch Boehm and several other staff editors. “The daypack is dead!” I begun, trying to sound as declarative as possible. “The era of the messenger bag is beginning.” A colorful selection of the Aerostich messenger bags spread across the table. As some editors started examining them I explained why this nearly unknown style of bag was so great for motorcyclists. And why I believed they’d rule in the future. And why these were made exactly the way they were. It felt as though we were pioneering something entirely new.

A few years later other messenger bag companies started up and their far less heavy-duty versions of this type of bag quickly became a college bookstore commodity. Today hundreds of other messenger bag variations are available from dozens of companies…but the Aerostich messenger bags (by size: 'letter', 'dispatch', 'courier', and 'parcel') are the original.

About ten years ago we created a new range of wax cotton messenger bags in several colors, added the color pink to the Cordura line and developed an optional internal organizer pocket system for all of the three larger-sized bags. An Aerostich messenger bag is a handcrafted American-made tool for carrying stuff when riding a motorcycle.

– Mr. Subjective

You may also be interested in the following product(s)

Aerostich Parcel Bag

Aerostich Parcel Bag

5 Review(s)
Aerostich Dispatch Bag

Aerostich Dispatch Bag

31 Review(s)
Aerostich Courier Bag

Aerostich Courier Bag

32 Review(s)