The boatneck knit is made from 100% extrafine merino wool (15 gauge, 19.5 microns), spun and dyed by Zegna Baruffa Lane Borgosesia in Biella, Italy.

Zegna Baruffa's Cashwool® is certified under the Responsible Wool Standard (RWS), ensuring humane treatment of sheep, sustainable land management, and supply-chain traceability; and certified under the OEKO-TEX® Standard 100. Zegna Baruffa's mills have also achieved the highest level of compliance with the Zero Discharge of Hazardous Chemicals program, and the 4Sustainability certification - reflecting excellence in the responsible management of chemicals and processes throughout production.