18 inch neck opening, 34 inch around shoulders 9 inches deep. I designed this Cowl/Neck Warmer originally for motercyle riders. It fills the space in the neck opening of a leather jacket, stays up on your neck, and fills that little V opening on the zipper wonderfully.....and who can't use a little pink to brighten things up! BUt you don't need to ride a motercycle to enjoy this neck warmer! Hand knit with my discontinued Bam Huey hand spun yarn, 60% Merino 40% Bamboo.