Mason Stretch Jeans, from Route One, are an all-weather motorcycle riding jean which uses a similar waterproof membrane that you would normally find in your winter biking trousers. 
Lined with 100% genuine DuPont™ Kevlar® Fibre To Impact Areas
Reissa waterproof and breathable membrane
‘Huntsman’ water repellent wash treatment
Comfort mesh lining
YKK zippers including jean to jacket zipper
SW Level 2 adjustable knee armour
Hip armour pockets
Coin pocket and rear pockets with welded waterproof zippers
Two standard front pockets
Route One branded belt patch
DuPont™ and Kevlar® are trademarks or registered trademarks of E.I. du Pont de Nemours and Company.