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Related Products ( 16 other products in the same category )
Who it is for and how to use it
Ideal for
Bikepacker looking for a compact under-saddle bag
Designed for those doing Bikepacking and looking for a lightweight saddle bag that can be attached and removed without tools.
Anyone looking for essential volume for long rides
Suitable for those who want to carry only the essentials under the saddle, with a compact profile and roll-top closure.
Riders using saddle rails with specific diameters
Suitable for bikes with saddle rail supports from 25.4 to 34.9 mm and for those who want a securely mounted bag.
Use cases
Ideal
Bikepacking with minimal luggage
The saddle bag design and 1.5 l capacity make it suitable for carrying the essentials on bikepacking trips.
Bikepacking · 1.5 l · Saddle bag
Very suitable
Road rides or rental bikes
Tool-free attachment and removal make it practical when a quick transfer from one bike to another is needed.
Quick release · Tool-free · Road bike
Very suitable
Routes with rain and spray
The Cordura and PU-coated nylon construction, together with the waterproof design, help protect the contents from water spray.
Cordura · PU-coated nylon · Waterproof
Suitable
Evening rides or low-light conditions
The reflector and the tab for a battery rear light improve visibility in the dark.
Reflector · Rear light · Safety
Who it is for
Minimalist cyclist
- Looks for
- A compact and lightweight saddle bag for carrying the essentials.
- Why
- It weighs 244 g and has a capacity of 1.5 l, with compact dimensions and a roll-top closure.
Rider using multiple bikes and wanting versatility
- Looks for
- A system that is easy to attach and detach from the saddle rails.
- Why
- It mounts without tools and is compatible with saddle rail supports from 25.4 to 34.9 mm.
Frequently asked questions
What is the capacity of the Ortlieb Seatpost-Bag S?
The capacity is 1.5 l. It is a volume suitable for carrying the essentials under the saddle.
Which saddle rail supports is it compatible with?
It is compatible with saddle rail supports with a diameter from 25.4 to 34.9 mm. It is not suitable for carbon saddle supports.
What material is it made from?
It is made from Cordura and PU-coated nylon. The product sheet describes it as a waterproof bag.
How much does it weigh?
The weight is 244 g. This keeps it manageable for under-saddle use.
What are the dimensions?
The dimensions are 8 cm high, 26 cm wide and 14 cm deep. These are compact measurements for under-saddle mounting.
Show all (6)
Does it have features to improve safety in the dark?
Yes, it has an extremely efficient reflector and a tab for a battery rear light. This helps visibility on rides in low-light conditions.
Information prepared by the BSA team with the support of AI, based on the manufacturer's specifications.
