I love Naja's ethos: "Naja is a product of our passions and beliefs: a love for beautifully designed things, a bit of rebelliousness, and a deep desire to make the world a better place." And they do this by employing single mothers or female heads of households to make underwear, paying the women above-market wages and giving them healthcare benefits.
I could go on and on! But this link will give you $10 off your first order.