An expandable backpack that also functions as a horn case, with a plethora of pockets and storage options! An updated version of the popular Marcus Bonna backpack bag with room for horn.

This backpack fits almost any detachable French horn, and is great for short trips. It will fit under nearly any airline seat.

Besides the instrument there is also room inside for a mute and some clothing. Pack everything you need for a weekend away in one carry-on! Additionally, there are two external front pockets providing more storage space, and one back pouch for sheet music or a laptop.

We do not recommend filling the backpack bag to its maximum. It may damage the case and/or damage the instrument. It's possible to increase the size of the backpack by 5 cm using the expanding zipper.

The waist belt provides a more comfortable weight distribution across your body.

The case includes:

• connectable straps

• 1 mouthpiece pouch for three mouthpieces

• 1 waist belt

• 1 identification tag

21.5" x 13.5" x 7.5"

We highly recommend you buy a Marcus Bonna bell protector to accompany this case.

Is this the right Marcus Bonna case for my horn?

Don't see the colors you like here? See our special order colors here. 

Or design your own case on the Marcus Bonna Custom Design Page.

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Marcus Bonna cases have been an extremely popular choice for brass players since 1991. All MB cases are lightweight, compact, and durable. Fiberglass (or carbon fiber) shell, nylon (or leather) exterior. High-quality stitching and components. Handmade in Brazil.

WARNING: Brass instruments and their accessories can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm, and Nickel, which is known to the State of California to cause cancer. For more information go to:

www.P65Warnings.ca.gov

Most new instruments and accessories over $75 are eligible for free shipping to the continental US.

Thein instruments, tubas, and pre-owned instruments are excluded from free shipping.

Click here for our full shipping policy.

Most products sold in the United States receive a 15-day return policy that starts on the day the customer receives their order. The customer is responsible for the cost of initial and return shipping, except in the case of new French horns, trumpets, and trombones, which will receive free return shipping from 48 US states. There will be a $5 cleaning fee for each returned mouthpiece.

Some product categories are ineligible for return, which include special orders, sheet music, consumables such as lubricants or cleaning snakes, and personal items such as clothing or face masks.

Unfortunately, as of May 12, 2025, we can no longer offer returns, exchanges, or refunds to international customers due to the tariff situation. We hope to restore international returns soon.

See the policy links at the bottom of our website for more information.

Click here to request a return.

Any product labelled "Special Order" is a final sale, no refunds or exchanges. Likewise, any product that has been customized at the customer's request can no longer be returned.

Click here for more information on special orders. If you want it, we will try our best to get it to you!