GOTS-certified organic cotton interlock fabrics, perfect for many different applications as e.g. underwear, sportswear, high quality shirts, nightwear and leisure wear. Interlocks are so called double knits, both sides of the fabric are identical and sometimes interlocks seem to consist of two layers. They are, however, inseperable and 'interlocked'. Interlocks are extensible, but not as much as for example rib fabrics. One of the good things about interlocks is that they don't curl, which makes them easier to work with.