Based in the U.S., Thinx began in 2014 and ships worldwide. From https://www.shethinx.com/pages/faq: Our patented technology (called THINX QuadTECH®) is made up of four ultra-thin micro-layers that all work together to do their thing. We developed the technology over three years before launching the product to ensure each and every pair is completely antimicrobial, moisture-wicking, leak-resistant, and absorbent. Depending on the style of underwear you select, they can hold up to 10 ml of liquid. They are sanitary and completely reusable. Take a look at our How it Works page to learn more. For every pair of THINX you buy, we send funds to our partner, AFRIpads, to help girls and women in Uganda. There is a great need for solutions in this part of the world. 94% of girls in Uganda report having problems at school due to menstruation and many drop out of school entirely.