Fleece is a fabric that, due to its good insulating properties, is also called "polar fleece" or "polar wool". It is a knitted fabric made from bulky and airy spun yarns that is pre-washed after knitting and then shrinks considerably. The cloth is then brushed on two sides. The volume of the fabric increases due to the two-sided brushing, which also greatly increases the insulating effect. The two-sided brushing distinguishes the fabric from the equally knitted sweat fabrics that are only brushed on one side.
The name fleece actually comes from the synthetic fiber industry, and is originally a fabric made entirely of polyester. However, the environmental impact of this plastic fleece is big because of the microplastics that are released when it is washed and end up in the surface water. Polyester is nowadays considered as one of the main causes of the plastic soup.
Our natural fleece is produced in a similar way to the synthetic, but of course without polyester that has been replaced by 100% organic cotton. This organic fleece is completely biodegradable.