When it comes to the clothing basics we reach for everyday, the tee is at the top of the list. When it comes to tees, there’s Proof’s 72-Hour Merino collection and everything else. Built from the softest and strongest merino wool on the planet, these tees and polos are at the absolute peak of clothing performance. The engineered fabric also wicks moisture, resists odors and regulates temperature, which means you can wear it for up to 72-hours straight (hence the name) without having to worry about looking or smelling like you’ve been wearing it that long. Upgrade today.