Endura thermolite winter bib shortwinter essential bibshorts from endura teflonhigh performance repel teflon fabric protector prevents fabric wetting out teflon is a registered trademark of dupont used under licence by endura ltd thermolite ideal for cold weather cycling thermolite uses hollow core fibre technology to create an insulating layer of warm air the result is a lightweight warm fabric with superior moisture vapour transport properties that doesnt get heavy even when wet the