…but for the rest of us we rely on our waterproof jackets to stay dry in the rain. Unfortunately, it has become increasingly well-known that much of the technology used can accumulate in the environment and in body tissue. A team at MIT (Massachusetts Institute of Technology) have developed a waterproofing technology that is both a technical and environmental breakthrough. They started with short-chain polymers (which only bioaccumulate a little but tend to perform worse) rather than long-chain polymers that are typically used (that bioaccumulate a lot but perform better). They then used a process to apply the waterproofing that had been developed at MIT called initiated chemical Vapour Deposition (iCVD). Whereas usually a material is submerged in a liquid waterproofing that blocks the pores of the fabric thus requiring a further process to open them up again to make a breathable fabric, iCVD doesn’t blog the pores in the first place. the technology is being further developed and the team are looking to license it to outdoor and clothing brands and manufacturers.