Most wearers find the brushed wool-blend knit soft at the neck; if you are very sensitive to animal fiber, it also layers comfortably over a collar.
The maker doesn't publish exact measurements. Worn as shown, it wraps once around the neck with both ends reaching about waist level.
Hand wash cold with a wool detergent or dry clean. Reshape and dry flat — don't wring or tumble dry.
Yes — the knit is thick but springy, so it wraps once over outerwear and still lies flat without bunching.