SENTIER adult horse riding poncho - dark grey with reflective bands
I haven't tested it 'in the field' yet, so I can't comment on it's waterproofing, but the fit is brilliant; plenty of room to wear layers underneath, and a big hood to cover my riding hat. Nice and long at the sides and back to keep saddlebags dry but doesn't look like a tent when not on a horse. Nice long sleeves for those with long arms, but these can be held back with poppered straps if needed.
If it's as waterproof as the description states, it will be the perfect wet weather riding/dog-walking coat!