1.800.651.4050 Mon-Sat 8am-5pm PT
CLICK HERE to join our Email List and get 15% off your first order*
*Restrictions Apply. Click for details.


Product Images

Topeak MidLoader Frame Bag Small - 183 cu in (3L)
Topeak MidLoader Frame Bag Medium - 275 cu in (4.5L)
Topeak MidLoader Frame Bag Medium - 275 cu in (4.5L)
Topeak MidLoader Frame Bag
Topeak MidLoader Frame Bag
Small - 183 cu in (3L)
Click to zoom
Topeak MidLoader Frame Bag 1
Topeak MidLoader Frame Bag 3
Topeak MidLoader Frame Bag 4
Topeak MidLoader Frame Bag 5
Topeak MidLoader Frame Bag 6

Topeak MidLoader Frame Bag

Pricing and Order Section

Mfg PartNum:
rating(2 customer reviews)
Earn $0.00 in Rewards credit. Click to Learn More.

MSRP: $69.95-$79.95
In Stock
This size is not eligible for Rewards points
Price matches are is not eligible for Rewards points
pricematch tag
InstantPrice MatchWhat is this?
Qualifies for Free Shipping!


Let's get loaded.

Pack up all the essentials and stay loaded with the Topeak MidLoader Frame Bag. Providing compact storage of heavy, bulky gear that you need when you're out for a multi-day bikepacking trip, the MidLoader is water-resistant and lightweight to stand up to whatever Mother Nature throws at you. Securing to the top tube, down tube, and seat tube of your frame, the MidLoader takes advantage of the dead space in the front triangle without blocking access to your water bottles. The durable, water resistant construction features two protected zippered openings, allowing for easy access to your precious cargo from either side of the bike.

The Topeak MidLoader Frame Bag is available in two sizes: 3L (37.5 x 12 x 6 cm), or 4.5L (36 x 12 x 6 cm).

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Small - 183 cu in (3L)

Bag Capacity: 100 to 200 ci 

Bag Type: Frame 

Mfg PartNum: TBP-ML4B 

Medium - 275 cu in (4.5L)

Mfg PartNum: TBP-ML5B 

Bag Capacity: 200 to 500 ci 

Bag Type: Frame 


Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Works as stated, but not too sure about how waterproof it will be
by Interbeing
Cycling Enthusiast
Austin, TX
3 of 4 customers found this review helpful.

I bought the 4.5L model on sale for under $45 at another site. For the money, it is a good value and it allows me to utilize the front water bottle cage on my mtn bike and road bike. The bag is well made but heavy, and it has a zipper on both sides, I'm not sure how useful this is. I also don't know yet how well it will perform on soggy, wet days. The mounting system does work perfect for my bike, utilizing the full length of the top bar. The 4.5L capacity is enough to hold extra water, tools, patch kit, and a few miscellaneous bits and pieces, as you may see fit. When bike packing, I plan to put my tent poles and some heavier kit in it. Overall, if my budget warranted, I would have probably gone with Ortlieb, as their bags are lighter and definitely waterproof, but for the amount of use I give them, this bag was easier to justify purchasing. Oh, yes, one other thing, I would recommend wrapping some clear tape over the contact points on the bike to avoid damage to the finish, goes the same for my Ortlieb bike packing gear.

Reviewed 8/21/2018
Was this review useful to you? Yes/No
Thank you for your feedback.
Does the job!
by Mick
Cycling Enthusiast
Huntsville AL
1 of 1 customers found this review helpful.

Well constructed frame bag. Zipper is a bit bulky to operate one handed but it is not a big deal. Have risen in a torrential down pour with no water making it into the bag. I would buy it again.

Reviewed 10/21/2021
Was this review useful to you? Yes/No
Thank you for your feedback.


Articles will open in new tab.

What you need for a road ride.
additional content loading
additional content loading
additional content loading