The endura thermolite bibknicker has been designed for cold weather cycling the thermolite material creates an insulating layer of warm air thanks to the hollow core fibre technology the result is a lightweight insulating bib short with superior moisture management properties so it doesn39t get heavy when wet the bib shorts also benefit from the high performance repel teflon fabric protector which prevents the fabric from 39wetting out39 for ultimate weather comfort silicone l