Castelli Flanders Warm Long Sleeve Base Layer

We pulled out all the stops to make what we consider the ideal base layer for mild- to cool-weather cycling. The focus is on keeping you dry, so we've worked with multidenier polyester that offers minimal moisture absorption combined with mechanical wicking to move moisture away from your skin. The main body uses a 3D rib-knit structure for exceptional stretch, but with channels that hold the fabric off your skin. The armpits are mesh, while the sleeves have a four-way stretch construction for comfort. All seams and the hem are flat seamed for comfort.Features:- Multidenier 100% polyester 3D-structure rib-knit main body for mechanical wicking and exceptional fit- Perforated 100% polyester mesh under arms for additional cooling- Multidenier 100% polyester 4-way-stretch sleeves for great wicking and fit- 4-needle flat-lock stitching lies flat for total comfort- Windproof membrane- Mock turtleneck- Flat-finish bottom- Longer back stays tucked inSpecifications:- Weight: 116g