I finally stopped buying disposable fashion. In your 30s, a T-shirt is the foundation of your entire style. I’ve spent months testing fabrics to find the ones that actually survive the dryer, stay opaque (not see-through), and feel like a second skin. Whether you're layering them under a wool coat in Winter or wearing them with linen in Summer, these 10 picks (5 for men, 5 for women) of basics. No more bacon-necks, just pure quality.