Nathan LightSpur LED Foot Light Bike-Tools & Maintenance-Workshop Tools then you need the Shimano

then you need the Shimano Di2 Bottle Cage Adaptor to move the battery upward

hands down

3D breathable mesh improves airflow and dries quicker

Certifications US: Complies with U

Nathan LightSpur LED Foot Light Bike-Tools & Maintenance-Workshop Tools then you need the ShimanoNo matter what your outdoor activity is or how high the sun is in the sky, this secure and lightweight LED spur will help keep you safe and spotted by cars. Powered by replaceable watch batteries that offer up to 40 hours of illumination, the Lightspur LED Foot Light is weather and water resistant to keep you going all day, every day. SECURE + SAFE Lightweight, super bright LED that securely clips on to the heel of your shoe. Two LEDs allow for 5+