Detours D2R Trunk Bag

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Manufacturer Description

Large capacity for serious commutes or epic tours.


  • Rear water bottle holder
  • 2 zippered side pockets
  • Bungee Cord top
  • Four-point quick release buckles plus Velcro strap for attaching to rear rack
  • Removable waterproof rain cover
  • Loop for attaching flashing light
  • Reflective accents
  • Included shoulder strap
  • Volume – 13.1 liters (800 cubic inches)
  • Dimensions – 33 cm x 18 cm x 28 cm (13 in x 7 in x 11 in)
  • Weight – 635 g (1.4 lb)
  • Retail – $85

YMMV Review

In late Spring, I was contacted by Detour to see if I would be interested in reviewing a bag or two. Since I commute by bike a couple of times a week I thought that it would be a great idea to test a couple of bags for the bike. Earlier in the summer I wrote up the review of the first of these bags, the Madison Rack Trunk. Now this review is the second of the two bags I tested. I want to thanks Detours for giving me the opportunity to review these bags.

Large Main Compartment


The D2R Trunk Bag is made to attach to the top of a rear rack. I use a ToPeak Explorer Rack on my commuter. I used the D2R Trunk Bag mainly on my commutes, but also some errands around town. My commute is 16 miles each way, so I generally need to carry a couple of items. Since it was summer, I was fortunate to have basically sun every ride.

Bag Expanded

Design ★★★½☆

Attachments (20%) ★★★★☆

Appearance (15%) ★★★☆☆

Construction (25%) ★★★½☆

Pockets (15%) ★★★☆☆

Sustainability (10%) ★★☆☆☆

Weight (15%) ★★★★☆

The Detours D2R Trunk Bag is made for commuting and bike touring. Throughout this review, I will compare it from time to time to the Madison Trunk Rack as they are both trunk bags from Detours. They do have a different target audience though. The Madison has much more style and is aimed at commuting and city riders for good looks on and off the bike. The D2R Trunk Bag is made more for function than appearance. It is a lightweight trunk bag that can work with virtually any rear rack. You can tell that Detours is a bunch of cyclists as both bags I have reviewed have been well designed for their purpose. The Trunk Bag is made of a tough nylon fabric for long-term durability. There are for plastic buckles and a Velcro strap to attach it to a rear rack. The four buckles are spread down the sides with two on each side. They are adjustable so you can tighten them down once buckled to make sure the bag is secure. The Velcro strap is located in the front of the bag and is made to attach to the rack and prevent the bad from sliding fore and aft.

Attached to my Rack

The D2R Trunk Bag has one large main compartment that can be extended upward for more space if needed. The main compartment is secured by dual zippers so you can access it in multiple directions. A second zipper allows the pocket to expand to a larger size. Since it is a hinged opening, the expansion is larger the further arrears you go. Underneath the lid, there is a stash pocket with a bungee opening. This is where the waterproof cover is stored but can be used for other things as well. There are two zipped pockets on the sides to allow for storage of smaller items. In the back of the bag is a drop in water bottle pocket with an elastic strap for securing the bottle further. This strap when pulled over the top of the bottle will prevent it from ejecting out on rougher terrain. On the back of the water bottle pocket is a small webbing loop for attaching a rear light. For better visibility, Detours has also used reflective trimming to the sides and back of the bag.

Comes with Shoulder Strap

When taking the Trunk Bag off the bike, there are two plastic clipping points that can be used with the shoulder strap. This allows the bag to be carried around more comfortable. On the top of the bag, there is a grab handle for another carrying method. Furthermore, located on the top of the pack near this handle is a bungee cord system for securing loose items.  This is handy for a jacket or other items you may need to stash along the way. If the weather turns, Detours has included a waterproof cover for the bag. It has a bungee opening to help it stay secure on the bag while covering it with waterproof protection. The cover is bright yellow for better visibility and has reflective logos for even more visibility. The D2R Trunk Bag feels well made with lots of important details. It is surprisingly light at 1.4 pounds, especially compared to the ToPeak MTX Trunk Bag which was over 1 pound heavier. The MTX did have more storage space, however.

I did try to find out information on how sustainable the bag is. I was not able to find any information about the bag or any information about any initiative’s Detour has regarding sustainability. I know they are a big proponent for cycling and alternative transportation so on that merit alone I gave them a two for sustainability.

Water Bottle Holder

Performance ★★★★☆

Adjustability (10%) ★★★½☆

Durability (20%) ★★★☆☆

Ease of Use (30%) ★★★★☆

Reflectivity (15%) ★★★½☆

Weather Resistance (25%) ★★★★½

The first time or two you use the Trunk Bag it will take a moment to get it situated correctly on your rack. Each rack is different, and that is what makes this bag great. The straps can adjust to fit different racks. In my case, I have different styled racks on my commuter as compared to by cruiser, and I have to attach the bag slightly different on each. With the webbing straps, this was easy to do. I will suggest if you are attaching the bag for the first time, it is beat to loosen them all up ahead of time so you can just give the straps a pull to tighten them once clipped. It is harder to do when the bag is partially attached to the rack. The Velcro strap is even easier to use once you realize it is there. I used the bag several times before I realized the Velcro strap was there and had no issue. With the strap, it is just even more bomber. On all my commutes I did not have any issues with the straps coming loose or unclipped; it was secure the whole way. The buckles are a little slower both on and off as compared to the MTX Bag I reviewed before but that bag has to weigh more for the rails and also can only be used with specific racks. This system is a better option if you want to use it on a variety of racks. The time loss is also just a matter of seconds, not minutes.

Up Close of Attachments

The D2R Trunk Bag does not have as much organization as the Madison does, but I did not feel like I needed all of that. The two side pockets allow you to store other small items separately, and the large main compartment was enough for nearly all my commutes. It does not expand enough to accommodate a laptop computer so if you need to ride with that on your commutes you will have to plan differently. The upper bungee is great for storing a jacket when on the move. If you need to keep it handy, this makes it easy to grab. The rear pocket worked well for the water bottle when I used it for that. I tend to put my bottle in my cages, so I used this pocket for my spare tube and tool instead of a water bottle on most rides. I can say it worked well for this as well.

The D2R Trunk Bag has been up for every ride thus far. I have not had any issues with it, and it still could pass for brand new. The bag has been solid and the zippers have all been smooth, even when I have had the bag packed full. I really like having the waterproof cover. While I have not had to really use it on a ride, spraying it with a hose, it proved to be plenty waterproof. Since Detour is a company out of Seattle, Washington, they should get this right. =) The cover is bright yellow, which is great for visibility in rainy weather. When not raining, I like all the reflective elements on the bag. My commute is dark for 1/3 of the year so this will come in handy then. The rear blinky loop also has worked well. It is secure enough that my light has never popped off which is important.

Rain Cover

Overall ★★★★☆

Overall, the Detours D2R Trunk bag is a carefully thought out rear rack bag. It is lightweight but still has plenty of room for most items you need for your daily commute. It could also be used for touring, but I like to put my tent on the top of my rack, so I do not think I would use it for that. You may have a different packing scheme than me, and this might work well. The bag can be attached to any rack, which is what I think makes it even better, you are not limited to a single rack. While the system is easy to use, it is not as quick and easy as the integrated systems I have tested, but weighs much less. The bag has plenty of pockets, and unless you need to pack your computer, there should be plenty of room. I really liked the included waterproof cover as many bags those are sold separately. If you are looking for an option for commuting, this bag deserves a look, and if it is not the one, check out the rest of the Detours collection. I also reviewed the Madison Rack Trunk and liked it a lot. It has a bit more style than this one at a loss of some functionality, but not much. They both are good bags. The Detours D2R Trunk Rack retails for $85, which I find to be a fair price. You get what you pay for with this bag. As always, your mileage may vary.


  • Expandable main compartment
  • Lightweight
  • Can attach to any rack system
  • Comes with waterproof cover
  • Easy to be seen


  • Somewhat slower to attach and remove
  • Buckles hard to loosen when partially attached, just do it beforehand

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About the Author

I am an avid runner, cyclist, swimmer, hiker, climber, skier and many other activities that would make this list too long. I started Your Mileage May Vary Reviews in Early 2011 to combine two of my passions: sports and gear.

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