The Tutto Nano Bib Knickers are a true winter training staplesuper soft, exceptionally warm and with Castellis best rain protection yet, this latest evolution in bib knicker technology is too good to be missed.If youre invested in getting the most out of your winter training but dont want to spend time worrying about unpredictable weather conditions, then the Tutto Nano Bib Knickers are a sound choice.As with every Castelli garment, the Tutto Nano Bib Knickers have been explicitly designed to give you the very latest fabric technology in a beautifully crafted format.The Nano Flex 3G fabric used across the garment utilises a combination of newly updated durable water repellent (DWR) treatment and mechanical heat treatment to give previously unheard-of levels of rain protection. Light rain beads off the fabric, keeping you dry when those inevitable rainy spells descend.On the inside of the Nano Flex 3G fabric, a super soft finish and the optimal loft have been achieved through Cast