Pro Seamless Arm Warmer leash Fabric is certified as bluesign®

Fabric is certified as bluesign® approved

The Session features channels on the front of the helmet for easy eyewear storage

Quick-dry + quick-drain

while 4-way stretch moves with you every inch of the way

With a twist mechanical lock to preserve battery life

Pro Seamless Arm Warmer leash Fabric is certified as bluesign®In conjunction with Team Ineos Castelli set out to make a better seamless arm warmer. Others on the market are made with a nylon Lycra blend that tends to hold moisture, but maybe they could get better moisture management with a polyester yarn. Working with polyester makes it more difficult to get the right stretch, return and manufacturing consistency, though. It took a year longer than expected, but we're all glad they stuck with it. These warmers