The two-way zipper allows you to open the vest from the top or bottom

We recommend sizing up

A sports shirt built to perform – every time

where stops are not always an option

Kalas PASSION Z4 - Aero Sokker Sort Bibtight The two-way zipper allows youKalas PASSION Z4 AERO Socks The newly developed PASSION Z4 Aerosocks combine a classic, clean design with cutting edge aerodynamic technology, making them the ideal choice for the serious cyclist. The socks are not only stylish and timeless, but are also designed with a focus on optimizing your performance. With a new pattern that provides an ultra snug fit, shaping perfectly to your shoes, air resistance is significantly reduced. This aerodynamic