Deerhunter Shellbrook model 3504 trousers. Plain green. Size M. Waterproof, breathable, quiet. Knees reinforced with ripstop type fabric. Waist has elasticated sections, I measure it as 32". Ankles have velcro straps.
Fairly lightweight, no insulation I bought them for spring/summer stalking.
I bought these today at the Catton Park Fair, they turned out to be too small for me. I paid £70 so offering them posted for £65.