SEIL[Za:il] ] = Initials of Safe, Enjoyable, and Interactive Lighting
A Unit of LED display

Usually bicycle riders use pouch or backpack to carry wallet, mobile phone and water bottle. Bicycles riders’ backpack is a must-have item for outdoor activities. SEIL-bag applied LED and flexible PCB is bicycle riders’s backpack for safe riding. When a rider using hand-signal, the rider is riding bicycle with one hand. It can lead to an accident. SEIL bag is designed to show left and right signals. Simply, controlling the detachable wireless controller enables various signals such as directional signal, emergency signal.

SEIL-bag is designed in order to illustrate traffic signals such as cruse signal, stop signal and emergency signal on the back pack. Bicycle riders could operate detachable wireless controller to show left and right turn signal by bluetooth.


We can provide all three type of designs: backpack, hipsack and pouch. You can select any products that are in the price range that you want. We will continue to develop various designs of these bags in the future.


visual_5 (1)

User could make any texts and images they want through smartphone APP and transmit data to LED display. Whenever smartphone APP is running, user can make sure contents on the SEIL-bag in real time and wireless controller do not practice during walking.


SEIL App has very simple interface so anyone can use it easily. You can make images, texts and simple animation that are then immediately transferred to the SEIL device to display.


As you can see in the video, you can add custom signals through our mobile app. Currently it is working only with Android-based phones. We will update a user manual for the app when we reach the goal.

The Controller

Wireless Controller
Bicycle riders could operate detachable wireless controller to show left and right turn signal by bluetooth.


Flexible PCB LED Display
SEIL-bag is composed of LED display which is built in the back pack.


The SEIL [Zail] = LED Display Unit
The SEIL display communicates with the controller using Bluetooth technology. This LED display is flexible and also waterproof (Both wireless controller and LED display are waterproof).

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