Motorcycle side box retro saddle bag in brown or black made from waterproof PU leather with dimensions of 42cm long by 15cm wide by 30cm tall for secure storage on motorbikes
Retro Motorcycle Side Box Saddle Bag in Waterproof PU Leather

This motorcycle side box combines classic retro styling with the practical benefits of waterproof PU leather construction. Designed to mount securely to your bike, it provides a dedicated, protected storage compartment measuring 42 centimetres long by 15 centimetres wide by 30 centimetres tall. Available in both black and coffee brown finishes, it offers riders a functional solution for carrying essentials while complementing the aesthetic of various motorcycle styles. Its primary role is to keep personal items, tools, or smaller riding accessories safe from road conditions and weather exposure.
Features and Construction

Built as a dedicated motorcycle accessory, this side box focuses on straightforward, practical design. The construction centres around the stated material and its defined dimensions, offering a specific storage volume for rider use.
Material and Build
The bag is made from waterproof PU leather, a synthetic material selected for its resistance to water and its ability to mimic a traditional leather look. This choice means the bag can handle exposure to road spray and light rain without the material soaking through. The construction as a rigid side box suggests a structured form designed to maintain its shape when mounted, providing a stable storage space that won't sag or deform under typical load conditions.
Size and Practical Fit
The provided dimensions of 42cm (length) x 15cm (width) x 30cm (height) define the exterior size and internal capacity of the compartment. This size is suitable for storing a range of medium-sized items such as a compact toolkit, a waterproof layer, snacks, or personal documents. Its 15cm width profile is designed to be slim enough to mount on the side of a motorcycle without creating excessive width that could interfere with lane filtering or garage storage, while the 30cm height offers useful vertical space.
Uses and Placement

As a saddle bag or side box, this product has clear applications for motorcycle riders seeking organised, external storage. Its design supports both everyday convenience and the practical needs of longer rides.
Event or Professional Use
For riders attending bike meets or shows, the retro design adds a period-correct or custom cafe racer look. Delivery riders or commuters can use it to securely store small parcels, lunch, or a change of clothes, keeping the main compartment of a backpack or top box free. The waterproof nature of the PU leather means items inside are better protected from sudden showers compared to untreated canvas or mesh bags, which is a practical advantage for daily or professional use in changeable climates.
Everyday Home Use
For general riding, the box serves as a convenient holder for a disc lock, gloves, or a small first-aid kit, ensuring these items are always on the bike and ready. Its locked storage (assuming a standard latch or lock point, common on such boxes) can provide a basic level of security for valuables when parked briefly. The two colour options allow riders to match the bag to their bike's existing colour scheme—black for a neutral match or coffee brown for a warmer, classic accent.
Benefits and Buying Value

The value of this motorcycle side box lies in its defined specifications and material choice, offering a known quantity for riders making a purchase decision.
Reuse and Low Maintenance
The PU leather material is straightforward to care for, typically requiring only occasional wiping with a damp cloth to remove road dust and grime. Unlike natural leather, it does not require conditioning oils or specialised treatments to maintain its water resistance. As a rigid, mounted storage box, it is designed for repeated use over time, providing a permanent or semi-permanent storage solution on the motorcycle that doesn't need to be packed and unpacked for each journey.
Why Choose This Product
Riders looking for a side box with a specific, stated size of 42x15x30cm and a classic retro appearance will find this product matches those criteria. The choice of waterproof PU leather is a practical differentiator from non-waterproof vintage-style bags, adding a layer of functionality to the aesthetic. By providing the exact dimensions and two colour choices, the product allows for an informed purchase based on fit and look, rather than guesswork about size or material performance.
