Silca Mattone Seat Bag - Grande
Bags
Silca Mattone Seat Bag - Grande
Silca Mattone Seat Bag - Grande
The SILCA Mattone Grande is the high-capacity version of SILCA's award-winning under-saddle bag. Read the overview
At a glance
- Volume
- 0.74L
- Closure
- BOA Closure System
- Weight
- 108g
- Internal Dimensions
- 150mm x 90mm x 55mm
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Overview
What is the SILCA Mattone Grande built to carry?
The SILCA Mattone Grande is the high-capacity version of SILCA's award-winning under-saddle bag. "Mattone" is Italian for brick, and the design is about as solid as that implies. The BOA Closure System dials the bag tight against your saddle rails with a ratcheting mechanism that delivers more than 15 times the holding force of Velcro, and it will not creep or loosen under vibration. At 0.74L, the Grande holds three road tubes, two CO2 cartridges, two tire levers, and a multitool, or two 29x2.5-inch MTB tubes plus the rest of your kit.
A high-friction Hypalon strap handles secondary retention, and the bag closes with a YKK waterproof zipper. The bag stays high and tight under the saddle with no swinging, swaying, or rattling. For long brevets, gravel epics, bikepacking, or anyone who rides far enough that one flat fix is not a complete plan, the Mattone Grande is the bag.
All the specs
- Volume
- 0.74L
- Weight
- 108g
- Internal Dimensions
- 150mm x 90mm x 55mm
- Closure
- BOA Closure System (ratcheting dial, 15x holding force vs Velcro)
- Strap
- High-friction Hypalon retention strap
- Zipper
- YKK waterproof zipper
- Road Capacity
- Up to 3 road tubes, 2 CO2 cartridges, regulator, 2 tire levers, multitool
- MTB Capacity
- Up to 2 x 29x2.5 inch tubes plus CO2, levers, and multitool
- MPN
- AM-BG-013-ASY-0300
- Warranty
- SILCA Limited Warranty, 2 years
FAQ
Good questions
Get to know Silca

There's more to Silca than this one product. Our Silca page has the full Silca lineup we carry and more about the brand.
Visit the Silca page →What is the difference between the SILCA Mattone Grande and the standard Mattone?
The SILCA Mattone Grande holds 0.74L. It carries up to three road tubes, two CO2 cartridges, two tire levers, and a multitool, or two 29x2.5 inch MTB tubes with kit. Both bags use the BOA Fit System and a Hypalon strap, so the choice comes down to how much you need to carry.
Does the SILCA Mattone Grande rattle under the saddle?
No. The SILCA Mattone Grande uses a BOA ratcheting dial that holds the bag tight against the saddle rails with more than 15 times the force of Velcro and will not creep loose under vibration. It stays silent and secure on rough roads and trail.
Is the SILCA Mattone Grande waterproof?
SILCA lists a YKK waterproof zipper on the Mattone Grande, but it does not call the bag itself waterproof.
Reviews
What riders say about the Lab
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Questions about this one?
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