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Topeak TopLoader — Specs & Analysis
Manufacturer specifications, compared against every other top tube & feed bags in our database. We do not test gear in the field — we measure, verify, and compare.
Topeak's take on the top tube bag comes in at 23.5 x 12 x 7cm for 0.75 liters, with a water-repellent shell and an integrated rain cover for when the weather turns properly bad. The rain cover is the interesting part — most makers just claim water resistance and leave you to it.
There are two philosophies for keeping a top tube bag dry. Build it waterproof and accept the cost and weight, or build it water-repellent and give the rider a cover for the days it actually matters. Topeak went the second way.
The TopLoader is 23.5cm long, 12cm tall and 7cm wide for 0.75 liters. That length sits right on the 23cm category median while the 12cm height is well above the 9.9cm median, so on paper it's an average-length but unusually tall bag — worth checking against your knee path before you commit, particularly if you ride with a lot of drop.
The 7cm width is on the narrow side of the field, which helps.
169g is heavier than the volume suggests, and the honest reason is the construction: stain-resistant shell, integrated cover, and Topeak's hardware. If grams are your religion there are lighter 0.75L bags. If you'd rather not think about the weather, this is the one with a plan for it.
One note from the spec sheet: Topeak lists the green version as lighter than the black. We've used the black weight, which is the conservative number.
Who Is the Topeak TopLoader Best For?
Riders in genuinely wet climates who want a cover rather than a coating. If that describes your riding style, the TopLoader should be at the top of your shortlist. It sits in the Top Tube & Feed Bags category alongside 12 other products we track.
How It Compares
At 169g and $48, the TopLoader is 109g heavier than the lightest option in this category (the Blackburn Outpost Top Tube Bag at 60g). The most budget-friendly option is the Blackburn Outpost Top Tube Bag at $35.
The price-to-weight ratio comes in at $28 per 100g — a reasonable middle ground between performance and value.
What We Like
- +Integrated rain cover — an actual plan for bad weather
- +7cm width is narrow for the category
- +Widely stocked and easy to find
Watch Out For
- −12cm tall — check it against your knee path
- −169g is heavy for 0.75L
- −Water-repellent shell, not a sealed bag
The Bottom Line
We haven't scored the Topeak TopLoader, and neither has anyone else we can cite. It's here for its verified specifications and dimensions, which is what the fit tools run on — a score is an editorial judgement, and we don't hand one out until someone has a basis for it. What this page can tell you is measured: 169g, $48, and how both sit against every other top tube & feed bags product we track.
Weight checked against the manufacturer on 25 August 2026 — see the source. The price above has not.
Specifications and dimensions come from the sources listed above. Where a page draws on first-hand riding, it says so.
How it compares
Against the 13 top tube & feed bags we hold published specs for.
At 169g the TopLoader is lighter than 3 of 12 alternatives we track. The category median is 115g.
At $48 it undercuts 10 of 12 of them, against a median of $69. That works out at $28 per 100g — below the $56 median for top tube & feed bags.
Weight and price come from published specifications. Cost per 100g is a blunt measure — it rewards light gear and says nothing about durability or whether the thing works — so treat it as one input, not a verdict.
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