Hydrophobic T-Shirts Are Miraculous--Until You Wash Them

A few weeks ago, an Australian startup offered to send me a T-shirt. I'm not normally on the T-shirt beat, but this one was special. The 100-percent cotton garment featured "patented hydrophobic nanotechnology" to make it super stain-resistant. "I'll be the judge of that," I thought, and a few days later the Threadsmiths T-shirt arrived in the mail.