The Tutto Nano Bib Tights are a true winter training staple – super soft, exceptionally warm and with Castelli’s best rain protection yet, this latest evolution in bib tight technology is too good to be missed.   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.   Features Newly updated Nano Flex 3G fabric for exceptional warmth, softness and protection from the rain. Minimal seam construction for aesthetic versatility and freedom of movement. YKK Camlock zippers. Kiss Air2 seat pad for lasting comfort in the saddle. Reflective ankle cuffs for low light visibility.