Legwear maker Royce Hosiery Llc has laid off 75 workers with the decision to cease some manufacturing operations at its Martinsburg, West Virginia plant.

According to Royce spokeswoman Barbara Rosenthal, the move will allow the company to focus more on the marketing and distribution side of its business.

"While it may seem sudden to people who are laid off, management has taken time and carefully analysed the situation," Rosenthal said.

She said the company would continue to employ about 100 people at Martinsburg, while legwear and sock production would be moved to another unnamed US plant.