Multicolour organic cotton-recycled polyester blend tartan seersucker detachable collar from GANNI featuring seersucker weave, tartan check pattern, self-tie fastening and waved edge. POSITIVELY CONSCIOUS: This brand measures the impact of every item they produce and supplies a Carbon Neutral Certification with each purchase, which measures the environmental impact of production and shows that they've covered the cost of making the carbon footprint neutral..