Castelli Armwarmers Nanoflex (Black) RGroup_41A4E91D7C66C97F7E170DA483B86C7DBF6CFE26 With a lifespan of over

With a lifespan of over six months and compatibility with CO2 inflation

from gravel roads to forest trails

women’s specific

weighing only 350g

Crafted from forged aluminum

Castelli Armwarmers Nanoflex (Black) RGroup_41A4E91D7C66C97F7E170DA483B86C7DBF6CFE26 With a lifespan of overIt's tough to make arm warmers warmer. If we know we'll be riding in conditions where a pair of arm warmers won't keep us sufficiently warm, we tend to choose a thermal jacket. But, what if the day turns out to be intermittently cold and wet? Well, the Castelli Nanoflex Arm Warmers are designed for days that deliver everything from cold and wet to sunny and dry. Nanoflex is a proprietary Castelli fabric. The mill begins with Castelli's super warm and