Gnveub Men’s Fishing Vest Outdoor Work Quick-Dry Hunting Zip Reversible Travel Vest Jacket with Multi Pockets

Where is size chart measurements ? I clicked size guide but no size chart pops up?

what size will comfortably close around a 17" neck?

Is there a logo printed on the pocket?

The khaki color I received seems much darker than the photo in the ad. Do colors run dark, or did they send me the wrong item?