Threadsmiths shirts emulate the natural hydrophobic properties of the lotus leaf. They contain no aerosol applications and no dangerous chemicals, and is completely safe to wear - as a shirt should be. The patented nanotechnology enhances the material’s resistance to water and stains, without diminishing the natural breathability of the cotton. This nanotechnology minimises the surface area for water and dirt to adhere to, causing it to bead up and roll off the fabric - creating a natural self-cleaning effect. Washing the tshirt is simple - they are fully machine and hand washable and will retain their water repellency longer than any hydrophobic spray on the market. To reactivate its water repellency, simply tumble dry at normal to low heat at every few washes.