GOTS is short for Global Organic Textile Standard and focuses on both ecological and social standards in production. From the website:
The aim of the standard is to define world-wide recognised requirements that ensure organic status of textiles, from harvesting of the raw materials, through environmentally and socially responsible manufacturing up to labelling in order to provide a credible assurance to the end consumer.
Textile processors and manufacturers are enabled to export their organic fabrics and garments with one certification accepted in all major markets…The standard covers the processing, manufacturing, packaging, labelling, trading and distribution of all textiles made from at least 70% certified organic natural fibres. The final products may include, but are not limited to fibre products, yarns, fabrics, clothes and home textiles. The standard does not set criteria for leather products.
Textile processors and manufacturers are enabled to export their organic fabrics and garments with one certification accepted in all major markets…The standard covers the processing, manufacturing, packaging, labelling, trading and distribution of all textiles made from at least 70% certified organic natural fibres. The final products may include, but are not limited to fibre products, yarns, fabrics, clothes and home textiles. The standard does not set criteria for leather products.