Waterproof large capacity bike tail bag for outdoor cycling, measuring 58*16*20*6.5cm with a 13 litre volume and made from durable PVC material, available in black, green, and yellow colour options to attach securely to your bicycle.
13 Litre Waterproof Bike Tail Bag for Outdoor Cycling in Black, Green, or Yellow

Carry more on your cycling journeys with this large capacity bike tail bag, designed to provide secure, waterproof storage directly on your bicycle. Its 13 litre volume is ideal for touring cyclists, bikepackers, or commuters who need to transport tools, spare layers, snacks, and electronics. Made from durable PVC, this bag offers reliable protection against rain and road spray, ensuring your essentials stay dry. The simple attachment system fixes it to your seat post, keeping weight centred and accessible without interfering with your ride. Available in black, green, and yellow, it offers a practical storage upgrade for any outdoor cycling activity.
Features and Construction

This bike tail bag is built with a focus on capacity, weather protection, and secure fitment to meet the needs of active cyclists.
Material and Build
The bag is constructed from PVC, a synthetic material chosen for its waterproof properties. This construction forms a barrier against rain and moisture, which is a core requirement for gear used in outdoor cycling where weather can change quickly. The material's properties help protect the contents inside from getting wet during rides in damp conditions. The bag's build is centred around creating a sealed storage compartment, with no specific mention of additional features like internal organisation pockets, so it is best used for bulk storage of items.
Size and Practical Fit
With external dimensions of 58cm in length, 16cm in width, 20cm in height, and 6.5cm in depth, the bag offers a substantial 13 litre storage volume. This size allows it to hold a significant amount of cycling essentials, from a toolkit and puncture repair kit to a lightweight jacket and food. Designed as a tail bag, it attaches to the bicycle's seat post, positioning the weight behind and slightly below the saddle. This placement helps maintain a stable centre of gravity while riding. The dimensions suggest it is a larger tail bag, suited for touring or long-day rides where more cargo is necessary.
Uses and Placement

The bag's stated function is outdoor cycling, which covers a range of activities from recreational rides to more demanding touring.
Event or Professional Use
For long-distance cycling events, charity rides, or bikepacking trips, the 13 litre capacity is valuable for carrying mandatory gear, extra nutrition, and safety equipment over extended periods. Its waterproof nature means electronics like power banks or GPS units, along with spare clothing, can be stored with less concern about weather exposure. The bag provides a dedicated, attached storage solution that avoids the need for a backpack, which can improve comfort and airflow for the rider during professional or endurance cycling activities.
Everyday Home Use
For daily commuting or weekend leisure rides, this bag offers a convenient way to transport a lock, a change of shoes, a water bottle, and a small purchase from a shop without requiring a backpack. The waterproof feature is useful for cyclists who ride in all weathers, protecting work documents or a mobile phone from unexpected rain. Having storage fixed to the bike itself means the cyclist can travel lighter, with items securely stowed rather than carried on their person. The colour options—black, green, and yellow—allow it to match different bike styles or personal preferences for everyday use.
Benefits and Buying Value

The product's value lies in its combination of high capacity, weatherproof construction, and bicycle-integrated design.
Reuse and Low Maintenance
As a durable PVC bag, it is designed for repeated use across many cycling trips. The material can be wiped clean with a damp cloth, requiring minimal upkeep between rides. Its robust construction means it can be used season after season for the same purpose—attached to a bicycle for storage. The bag's value is realised over time through reliable performance, eliminating the need for disposable bags or less suitable carry options for each ride.
Why Choose This Product
This bike tail bag is a practical choice for cyclists needing more attached storage than a small saddlebag provides. Its clear 13 litre capacity and waterproof PVC build address specific needs for volume and weather protection. Compared to using a standard rucksack, it offers the advantage of keeping the rider's back free and cool. The product provides a dedicated cycling storage solution that is larger than many tail bags, making it suitable for those who carry substantial gear. The availability in three colours also offers a basic level of personalisation to match your bike or style.


