New Zealand outdoor merino wool apparel company Icebreaker has promoted Darren Glassman to global general manager of its RedRam merino thermal underwear brand.

He will be responsible for managing and growing the brand, which was launched last year. The role includes direct oversight of all manufacturing, operational, sales and marketing activities in each of its global markets. He is also the liaison between the Portland-based product development team and a global sales force.

"During his time with Icebreaker, he has more than proved how he could manage and grow a category, and we're excited to see where he takes RedRam," said Tony Balfour, markets general manager for Icebreaker.

Glassman has been with Icebreaker since September 2008, when he joined as global general manager of socks and accessories, Icebreaker's first foray into category management.

"Socks and accessories often serve as the entry point for a consumer into the Icebreaker brand," said Glassman. "Similarly, RedRam, which is sold within the hunt and fish, sporting goods and department store channels, is typically the first merino experience for our target consumer.

"RedRam is a great opportunity for Icebreaker to mount an attack on a massive playing field, by reaching a new group of active consumers who live, work and play in the type of environments that demand the benefits of merino."

The sustainably-produced range includes short-sleeve and long-sleeve tops, singlets, camis, leggings, boxers and boy shorts priced from $29.99 to $57.99.