Material: Polyester 600D – double rubberized inside reinforcement for water resistance and durability
Dimensions: 46x32x20 cm
Powered by: 2 x CR2032 button batteries (included)
Features: INTEGRATED LED LIGHT for increased visibility and safety | USB PORT with cable | Headphone exit | Reflective stripes | Quality SBS zippers | 3 large departments, 1 smaller department, 3 hidden »theft-safe« pockets | Lap top department | 2 Powerbank pockets | Accessories organizer | Hard and padded back with air circulation system | Padded bottom | Padded shoulder straps | Height adjustable shoulder straps | Reinforced backpack holder | Waist straps | Chest straps with SAFETY WHISTLE | Skateboard/ clothes holder pocket | Clothes side straps | Side pockets | Easy zipper handler
Why we use GREEN LED lights and not any other ?
The human eye sees color over wavelengths ranging roughly from 400 nanometers (violet) to 700 nanometers (red). Light from 400-700 nanometers is called visible light or the visible spectrum (see »Visible Spectrum Table«).
The human eye response is most sensitive in the green, peaking around 555nm (see »Eye Color Sensitivity« chart).
Conclusion: Green color is the most sensitive and visible color for the human eye and therefore the most suitable to use for the road users visibility and safety !