Feel the chill and need something light to retain your sanity on the bike?

The most extreme exploitation of Karl Mayer seamless knitting technology: zero seams, two gloves, one balaclava, one long sleeve base layer.

This is the answer to your circulation issues. 

Base Layer 4 fully integrated hermetic
The Fully-integrated Hermetic base layer is Q36.5’s most extreme exploitation of the potential of Karl Mayer seamless knitting technology. 1 base layer (slightly denser and more closed pattern than the Base Layer 3), 2 gloves and 1 balaclava are all woven from the same single tube to produce a hermetic deep winter riding environment. Thanks to the Karl Mayer machine’s unique ability to produce a true rip proof mesh and thus an un-hemmed finish you may cut and modify the base layer as you wish, remove the gloves and balaclava, or simply create a slit which allows for these components to be either worn in or folded aside, at no expense to the product’s durability. As with all the other base layers in the range riders (even those already familiar with other seamless base layers) will be able to notice significantly greater elasticity and lower resistance to movement in all directions, given by the Karl Mayer machine’s ability to eliminate seams from all parts of multiples tubes (with the exception of a small joining stitch on the top of either shoulder), unlike other base layers which generally require stitches joining the arm to the body, as well as being hemmed. The ‘honey-comb’ pattern of the knit is deployed in various different densities, along with open-mesh sections, mapping the thermal requirements and regional sweat rates of an athlete’s body. Not only does this allow for the best rider comfort and protection, it also allows for the volume of the product to be significantly reduced where possible.
Weight is 138g (result of the design, not an objective) and is best used above 0°C.