The Staple Heavyweight Crew 3-Pack

I've been wearing the pocket version for years, but these are even better for layering under a jacket—the collar holds its shape perfectly. The fabric is substantial enough to feel premium without being stiff, and they've held up well after several washes so far.

Bought these for the cleaner look without the pocket, and the neckline holds its shape perfectly after a few washes. The weight feels substantial but still breathable enough for layering.

The fabric is noticeably heavier and softer than most packs I've tried, and the cleaner neckline makes layering much easier. After a few washes they still hold their shape perfectly.