Serfas E-Lume 30 Tail Light Bike Accessories Brand_Greenfield SuperFlow technology drastically reduces all

SuperFlow technology drastically reduces all physical limitations caused by prolonged pressure in the perineal area

and real-world riding of prototypes

with up to 80 hours battery life in GPS mode — or up to 300 hours in max battery mode1

6 mg magnesium

This state-of-the-art technological fabric adjusts to your body like a second skin in order to provide you with necessary muscular compression

Serfas E-Lume 30 Tail Light Bike Accessories Brand_Greenfield SuperFlow technology drastically reduces allFeatures: 30 Lumen Max Output 4 LED Chip Finned Lens Design Provides 270 Degree Visibility Blue LED Charge Indicator Daytime Flash Mode Up To 34 Hours Runtime Micro USB Rechargeable