Roll-top welded seams and a zip are two different levels of waterproof · review
A hard-shell rack trunk bag that opens from 17 to 45 liters with zip-out side panniers, with a padded interior and shoulder straps.
Our conclusion A clever commuter bag that keeps its shape, but do not call it waterproof.
A trunk bag sits on top of the rack, and panniers hang at the sides. This one does both by unzipping, which is why it is more popular than most single-purpose bags.
A range from 17 to 45 liters, composite carbon leather with strong water resistance, zip-out sides, two shoulder straps, a padded interior with a detachable partition, and an integrated body frame.
The hard shell keeps its shape, so a laptop or a camera is safer than in a soft bag. It also holds groceries better when the sides are open. Fully opened, 45 liters is similar to the Ortlieb pair at a fraction of the cost, but the weather protection is a level below.
Load the heaviest items low and in the center of the bag. Tall trunk bags can make a bike feel top heavy. If you ride through rain, pack the laptop in its own sleeve.
| Capacity | 17 to 45 L |
|---|---|
| Material | Composite carbon leather, water resistant |
| Structure | Integrated body frame |
| Inside | Padded, detachable partition |
| Carry | 2 shoulder straps |
| Compartments | 5 |
| Model | A6-6 |
ROCKBROS says strong water resistant. That is less than a rolltop like the Ortlieb. Use a rain cover in steady rain.
It sits on a rear rack. Check the strap fit and width against your rack.
7.8/ 10
A clever commuter bag that keeps its shape, but do not call it waterproof.
Same category, nearby prices, between bike gear. What remains is the specifications every one publishes — half empty, a column is no use.
| Model | Price | Capacity | Model |
|---|---|---|---|
| ROCKBROS 17-45 L Trunk Bag with panniers | $90 | 17 to 45 L | A6-6 |
| Rhinowalk Waterproof Saddle Bag, 13 L | $34 | 13 L | Y5110 |
| BAIGIO Double Pannier Bags, 34 L | $32 | 34 L in the title, 36 L in the table, 25 L in the bullets | CG-TRUNK-BAG2 |
| Ortlieb Back-Roller City, 40 L pair | $170 | 40 L | F5002 |
Commuting with a laptop or a camera.
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
40 L · rolltop · pair · fits rack tubes to 16 mm · 8 and 11 mm inserts
A rolltop pannier pair from Ortlieb with 40 liters of volume and hooks that fit rack tubes up to 16 mm with 8 and 11 mm inserts in the box.
Best for: Daily commuters and tourers in wet climates.
≈ $170.00
13 L · PVC polyester · four-point fixing · tail light hook · reflective strap
A 13 liter bikepacking saddle bag in PVC polyester with four-point strap fixing, elastic cords and a tail light hook. No rack needed.
Best for: Bikepacking and light touring on a frame with no rack mounts.
≈ $33.99
34 L listed · 300D polyester with PU · 30 × 28 × 14 cm per side · reflective stripes
A low-cost double pannier in 300D polyester with PU nylon fabric, quick-release buckles and reflective stripes, with a capacity given as 34 L, 36 L and 25 L on one listing.
Best for: Occasional trips with a light load.
≈ $31.99
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
