Bicycle mudguard with built-in LUMIS™ series rear safety light. Made of lightweight PP sheet, Simple and slim, it matches most bicycles. Excellent light transmission and diffusion helps increase the safety area and improve nighttime visibility. One-click locking design, easy to disassemble and assemble. It can be interchanged with LUMIS saddle bags, It keeps your butt dry on wet roads Compatible with all standard double steel rails. Suitable for tire widths between 23-40 mm When not in use, simply remove it. Easy to clean because it is flexible Weight: Mudguard 30g / Rear light 60g Material: Custom polypropylene (100% recyclable) READYGO LUMIS rear light: Mode / Autonomy: Constant-3hr / Blink-11hr / Pulse-7.5hr / Echo Flash-20hr. Maximum luminous intensity: 30 lumens (max.) Input: 5V 500mA. Lamp: 1 super bright SMD LED. Battery: 3.7V 300mAh Lithium-ion. Charging: USB-C. Installation: Attachment to rails 43mm wide. Weight: 60 gr.