Waxed cotton leggings fastened to my belt have always worked for me, they're waterproof and if you're not kneeling down constantly they last a long time. If you are constantly kneeling, change religion. On wellies, I spend a fortune, Le Chameau neoprene lined at £150 a pop if you're lucky, but I wear them all day every day in winter and they last a minimum of 2 years.
Waxed cotton leggings fastened to my belt have always worked for me, they're waterproof and if you're not kneeling down constantly they last a long time. If you are constantly kneeling, change religion. On wellies, I spend a fortune, Le Chameau neoprene lined at £150 a pop if you're lucky, but I wear them all day every day in winter and they last a minimum of 2 years.