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ALMSTHRE Top Tube Bike Bag, Midnight Black, 8 x 2 x 3 in

$58.00 (Price correct as of 11/12/2026 11:27 PST · Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The ALMSTHRE Top Tube Bag is a Midnight Black bicycle storage bag sized 8″ x 2″ x 3″. It uses universal mounting with straps, bolts, or a tether cord and includes a waterproof zipper plus a cord access port for essentials and cable routing.

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Quick Summary

The ALMSTHRE Top Tube Bag is a bicycle storage bag in Midnight Black with an 8″ x 2″ x 3″ size. It is described as a top tube bag with universal mounting and a slim shape for carrying essentials on the bike.

The bag is also described with a waterproof zipper, a cord access port, and a secure, stable attachment system. Those features matter most if you are comparing how the bag mounts, how easily you can reach contents, and whether the size works with your bike setup.

Key Details

Detail Product information and buyer relevance
Brand ALMSTHRE. Useful for identifying the exact product line.
Product type Top tube bike bag. Designed to mount on a bicycle top tube.
Color Midnight Black. Check this if you are matching an existing bike setup.
Size 8″ x 2″ x 3″. Important for fit and available space on the bike.
Mounting Universal mounting with straps, bolts, or a tether cord. Compare this with your bike’s setup and preferred attachment method.
Access features Waterproof zipper and cord access port. Relevant if you want access to contents and cable routing.

What to Compare Before Buying

  • Mounting method: This bag uses straps, bolts, or a tether cord. Check which attachment style matches your bike and installation preference.
  • Size: The stated size is 8″ x 2″ x 3″. Compare that with the space available on your frame and top tube area.
  • Access: A waterproof zipper is listed. If quick access matters, look at how the zipper position works for your riding setup.
  • Cable routing: The cord access port may matter if you want to run a charging cable or headphones through the bag.

Before You Decide

Confirm the 8″ x 2″ x 3″ size, the Midnight Black color, and the mounting method before choosing an offer. If cable access matters, check that the cord port matches how you plan to use the bag on your bike.

Water Protection Check

A waterproof zipper label describes the closure, but does not by itself establish the water protection of the bag as a whole. If you need to keep contents dry, confirm the complete bag’s water-resistance rating and intended exposure before relying on it.

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