Recycled polyester striped turtleneck sweater RECYCLED? But recycled from what? "FROM WAIST" This material commonly called rPET (or recycled polyester) comes mainly from the recycling of used bottles (and / or food packaging, used clothing). After the collection of bottles and plastic waste, they are sorted and washed before being crushed and transformed into granules. Following this recycling process, a recycled textile fiber can be manufactured: rPET. A true eco-responsible alternative, rPET has a quality comparable to ordinary polyester and nylon.