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SILCA Mattone Under Seat Bag for Bicylces with Zipper and Waterproof zipper and BOA mounting system (Small, Black)

Free shipping on orders over $29.99

$50.00

$ 24 .99 $24.99

In Stock

1.:Small


2.MaterialType:Nylon


About this item

  • Exterior: Our seat bag has a sleek black finish with reflective graphics that allow the bike seat bag to virtually disappear under the saddle while still having a reflective SILCA shield that provides high visibility in low light when seen by headlights.
  • Interior: It has hi-contrast red nylon material providing full volume with elastic walls that protects to the contents. and having an asymetric design that keeps contents contained when the bag is fully opened.
  • Volume: The Mattone bicycle saddle bag holds one inner tube, one CO2 cartridge, SILCA bike tire lever set, CO2 regulator head, credit card/ID, and multitool with ease.
  • Attachment: Our bags have a BOA closure system with an open guide release on the Hypalon retaining strap, which allows for easy installation over the seat rails while providing industry-leading grip and strength in the steel cabled BOA closure system.
  • Zipper: The YKK Aquaguard zipper is the top of the line in waterproof bag zippers that blends nicely with the overall design of the bike bags and allows the bike tool bag to be accessed while still being installed under the bike seat.



Product Description

SILCA Mattone Saddle bag with BOA capture system: Elegant yet secure design for any riding style

silca mattone seat bag and rider bicycle seat bike bag bike saddle bag bike seat handlebar bag park

Mattone Seat Pack

Seat bag users fall into two categories: Seat Roll aficionados and seat bag users. Traditionally, seat bags have been simple open spaces that allowed content to jangle about, making noise and rubbing against each other. Often a spare tube stored in a seat bag will have more holes than the one being replaced due to friction against a house key or multi-tool.

With Mattone, we designed a layout like a book, where the bag can fully open to hold the tube and CO2 cartridge on one side, separated by a padded ballistic nylon ‘page’ separating it from the other side where you can store an inflator head, multi-tool, contact lens case, etc. The ‘page’ or divider also contains a pocket for a credit card, ID, money, or house key. The unique off-center YKK Aquaguard Zipper allows the case to completely open and lay flat when off the bike, while also allowing easy access to the multi-tool and money/card slots when on the bike without risk of spilling all the contents of the bag.

Mattone bag on saddle showing BOA system bicycle seat bike bag bike saddle bag bike seat handlebar

BOA Closure system

A Wide Hypalon strap combined with a BOA closure is extremely secure and hassle free. Just push to Lock the boa and turn the dial clockwise to tighten the steel cable. Pull out on the BOA dial to unlock the system and the coiled up steel cable will unwind and loosen the bag from the bike seat rails

all of these items fit - gear wipes, credit card, multi-tool, tire levers, extra tube bicycle seat

Complete Storage system

small and compact the edge to edge zipper design of the pack optimizes the inside space allowing on and off the bike access to a surprisingly spacious saddle bag. The internal divider makes it possible to store your sensitive essentials like a tube with the hardened steel tools like multi-tool or threaded co2 canisters without the risk of damage

mattone bag on a pink bike, cerakote Titanium cages and Impero frame pump bicycle seat bike bag bike

Compact Design - Small but Mighty

For all of us that want to pack everything that is essential for a bike ride without having to wear it on our back but also avoiding the bulk of many other bags that can cause rubbing damage on your expensive short. The BOA and hypalon strap allow the user to pack a minimalist design and cinch it down or pack the bag to the brim without risk of the bag breaking or coming off the bike due to the weight

SILCA MATTONE - Italian for Brick this bag has a defined rectangular shape that tucks under the saddle and is discrete without sacrificing storage

mattone bag with boa attached to black saddle and black seat post bicycle seat bike bag bike saddle

Perfect for every riding discipline

Ins and Outs of the bag
  • .61L capacity
  • fits: one tube, 2 CO2 carts, regulator, multi-tool, tire levers and credit card/keys
  • unique BOA closure system
  • YKK waterproof ZIPPER
  • super strong and non-slip Hypalon strap for the most secure saddle bag

What is the MATTONE?

Types of users?

Seat bag users fall into two categories: Seat Roll aficionados and seat bag users. Traditionally, seat bags have been simple open spaces that allowed content to jangle about, making noise and rubbing against each other. Often a spare tube stored in a seat bag will have more holes than the one being replaced due to friction against a house key or multi-tool.


Alex Cawley
2025-08-20 09:34:46
I have been searching for something that fits on my TT bike under my rear seat hydration. This is nearly the bag to do it but the strap is just slightly too short. finding a bigger strap is a potential solution but this strap is so nice it would be a shame to replace it. I can get it around my seat tube but it likely wouldn't stay as it is in the picture. definitely keeping it for my other bike because the bag itself feels like a great durable material with plenty of room for tube, tire levers, CO2, any essentials as expected.
Anthony
2025-07-22 14:06:54
This is the perfect bag for me. Tucks tight under the seat and BOA strap mechanism, is sweet!, keeps it secure on rough terrain. I have a competitors with a hard case. Problem is after a few months of riding the clip mechanism is very wobbly. Not this bad boy, not going anywhere. As others have said it’s small. I use it for a multi tool, keys to my vehicle and ID. I run tubeless so just carry a few basics. Highly recommend, a bit pricey. Would like to see it in the $35 range.
TheSandman
2025-06-30 18:39:47
Top quality and great BOA closure. What do I fit in this thing? For the record, this is not a large saddle bag and you need to consider what you need to carry with you. I have a CO2 cartridge and inflator, small multi tool, tire levers, tube patches, and 2 TPU inner tubes. All of this fits tightly but well with just a bit of extra room for keys etc. if I wish to put them in the bag. Note, if you use standard rubber inner tubes, it will be tight to fit one tube and all the tools I have listed, but will work.
Bianchiguy
2025-06-21 13:37:13
This bag is perfect for those of us who do not want a larger bag on our bikes. The cable attachment works great and the size is perfect for a small multi-tool, a TPU tube, tire iron, Co2 cartridge/inflator head and a tubeless plug kit.
Matt
2025-06-15 13:35:57
It is roughly the size of a brick (minimalists beware). The overall quality is very good and the boa closure is excellent. I would highly recommend the bag for a person wanting to carry the “essentials” in case of a flat or mechanical. I like to use saddle bags to carry items when I flat, need to adjust seat post or gears. I do not use saddle bags to carry nutrition, I.e. gels and gummies, because of the inconvenience of getting off the bike to access them. I use my easily accessible jersey pockets to carry my nutrition. I am able to fit a 25c conti ultralite tube, CO2 canister with small chuck, and a Pedro’s multi tool including pedros small tire levers. Gravel cyclists who want larger tubes and other items will have a hard time fitting more into the bag. It secures firmly to the saddle and I do not experience rattling or “swaying” of the bag. Accessing the bag is a minor hindrance. People who want to regularly access the bag may not like having to fiddle with the boa AND zipper to access the contents. For those who use saddle bags for flats or mechanical items, this bag is an excellent option.
John Raymond Lama
2025-05-29 21:47:26
Too small for my iPhone but big enough for nitrogen cartridges and small Allen tools
Douglas
2025-05-17 12:39:53
Good quality material, zipper, and boa dial. This pack fits nice and neat under your seat out of the way! It’s small but still has plenty of room. Definitely recommend if you don’t have alot if seat post available and want to attach light and or a camera to the seat post.
S. Bachtel
2025-05-14 15:55:32
Love SILCA products. This bag is so easy to install and remove. So much easier than other big brands who are using Velcro. This bag also doesn’t require a strap around the seatpost… this means I can pop the bike on the repair stand without unstrapping the bag. 6 stars.
Nicolo'
2025-05-10 17:06:21
Fatta bene e utile. Indispensabile per i ciclisti. Infatti non l’ho presa per me ma chi la usa e’ contento!!!
Fabiano
2025-03-24 18:55:09
Ajuste e ótimo, não fica balançando. Porém antes de comprar saiba que é bem pequena. Vai bem uma espátula, uma câmara reserva e CO2 apenas.
Vitalc
2025-01-27 11:15:12
Contient le necessaire: chambres a air, demonte pneu, multi outil, dans un volume mini, tres bien fixe a la selle. Parfait.
-Kunde
2024-11-23 13:20:38
Perfekt
miguel angel bayo lugardo
2024-11-17 13:43:14
Todo perfecto 👍👍