The Perfect-Shirt Finder: Instant Matchmaker for Durable, Comfy Tees

The poster loved an Old Navy shirt for its thick collars, cuffs and waist that prevent stretching, side slits at the waist, and very soft, comfortable fabric, but cannot find it anymore. They describe maintained sleeve shape, neck stability, and an ideal oversized-but-not-too-oversized fit, and ask for help finding anything similar.