light

Safety Lights to Brighten Your Training

Safety Lights to Brighten Your Training

Ensure you are visible during dark training hours with 4id Safety Lights.
Bright Light Before Bed Leads to Faster Cycle Times

Bright Light Before Bed Leads to Faster Cycle Times

Here's an easy way to save over a minute on a 10km time trial - just by using light and its effects on your body physiology.