The r ev1 rumbles jersey features a new pattern with set in sleeves and a clean line that together with the new rib 130 bio ceramic fabric a highly functional material on the back making this garment the best choice for those that makes racing their primary passion the new collar is lower on thefront for an improved comfort the rib 130 fabric protects from the harmful uva and uvb rays as it works as an active barrier and ensures freshness while keeping the body at an ideal temperaturethe