Black Topeak MidLoader 4.5L frame bag with hook-and-loop straps
Black Topeak MidLoader 4.5L frame bag with hook-and-loop straps
Side zipper and strap detail on the black Topeak MidLoader frame bag
Side zipper and strap detail on the black Topeak MidLoader frame bag
Black Topeak MidLoader 4.5L bag mounted inside a bicycle frame beside a home porch
Black Topeak MidLoader 4.5L bag mounted inside a bicycle frame beside a home porch
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Black Topeak MidLoader 4.5L frame bag with hook-and-loop straps
Side zipper and strap detail on the black Topeak MidLoader frame bag
Black Topeak MidLoader 4.5L bag mounted inside a bicycle frame beside a home porch

Topeak

MidLoader 4.5L Frame Bag

Price
$77.95

The short version

Details & specs
Capacity
4.5 L / 275 cu in
Size
46 x 12 x 6 cm / 18.1 x 4.7 x 2.4 in
Maximum load
6.5 kg / 14.33 lb
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Return Policy

Eligible return or exchange requests must be submitted within 45 days of the order date. Items must be new and unused with original packaging, tags, and accessories. General change-of-mind returns are not accepted. Customers cover return shipping for size exchanges; Alpine Extreme covers approved returns caused by an incorrect, damaged, or defective item. See the full Return & Refund Policy for exclusions and refund timing.

Shipping

Free standard shipping is available to most addresses worldwide. Availability, delivery estimates, and any expedited charges depend on the destination and order. International customers are responsible for applicable duties, tariffs, or customs fees.

Black Topeak MidLoader 4.5L frame bag with hook-and-loop straps

MidLoader 4.5L Frame Bag

$77.95

Use the space inside your frame

Black Topeak MidLoader 4.5L bag mounted inside a bicycle frame beside a home porch

In the field

The black Topeak MidLoader 4.5L frame bag carries ride essentials in unused frame space. It attaches with hook-and-loop fasteners and has a water-resistant zip opening on each side.

Reach gear from either side

Use the zippered opening on either side to get to your gear.

Fit it to your frame

Check the top, down and seat tube diameters, then protect the frame at each contact point.

Bag and attachment

Capacity
4.5 L / 275 cu in
Material
Polyethylene / nylon
Material finish
Water repellent and stain resistant
Bag attachment
Hook and loop fastener
Access
Two water-resistant zippered openings
Weight
195 g / 6.88 oz (Black)

Frame fit

Top tube diameter
Fits 45-66 mm
Down tube diameter
Fits 38-70 mm
Seat tube diameter
Fits 28-60 mm
Maximum load
6.5 kg / 14.33 lb

Important information

Frame-protection note
Sand, dirt, mud or poor packing can dull or scratch frame paint over time. Protect contact areas with foam or protective film before attaching the bag.
PFC-free
Yes
California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

FAQ

How can I reach Alpine Extreme if I have questions?

Email [email protected] or use our contact form.

Do you offer free shipping?

Free standard shipping is available to most addresses worldwide. Availability, delivery estimates, and any expedited charges depend on the destination and order. International duties, tariffs, and customs fees remain the customer’s responsibility. See our Shipping Policy for details.

What's the return policy at Alpine Extreme?

Eligible return or exchange requests must be submitted within 45 days of the order date. Items must be new and unused with original packaging, tags, and accessories. General change-of-mind returns are not accepted. Return-shipping responsibility depends on the reason for the return. See the full Return & Refund Policy for exclusions and refund timing.

How long will it take for my order to arrive?

Orders are typically processed within 2–5 business days. Most standard shipments arrive within 7–14 business days after shipping, depending on destination and carrier conditions. Delivery estimates are not guaranteed.

Can I track my order?

Yes. Tracking details are emailed after shipment. You can also check order status with your order information through our order-tracking page.

What if there's an issue with my order?

Email [email protected] or submit the form on our support page. Report delivery issues within 60 days of the order date so carrier information is still available.