Our human microbiota is extremely delicate and can change through the influence of our surroundings. This strong symbiosis between bacteria and body is paramount for our survival; among many other functions our microbiota protects us from germs and synthesises vitamins. This material research project utilises bacterial cellulose as a scaffold for healthy, beneficial bacteria to colonise and influence our own microbiota. Through the symbiosis activation through human sweat, it offers great opportunities as sports underwear, while e.g. reducing odour or enhancing our skin's resistance.