Pro Seamless Arm Warmer leash while 4-way stretch moves with

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

Fabric is certified as bluesign® approved

With a twist mechanical lock to preserve battery life

Quick-dry + quick-drain

Ribbed knit

Pro Seamless Arm Warmer leash while 4-way stretch moves withIn 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