(Reuters) - Lululemon Athletica ( LULU ) will close its distribution center in the state of Washington at the end of the year and lay off more than 100 employees, the apparel retailer told Reuters on Friday.

The Vancouver-based firm will shutter the Sumner distribution center as part of its business optimization effort and cut 128 jobs beginning June 21, according to a WARN notice filed with the state's Employment Security Department.

The move comes at a time when Lululemon is seeing slowing demand for its premium athleisure in North America, where excessive inventory levels at sporting retailers has resulted in lower orders for sportswear and apparel firms.

The lease for the company's 150,000-square-foot Sumner distribution center will end on July 2025, a regulatory filing showed.

A company spokesperson said some of the employees would be retained and relocated to other facilities, including the recently opened distribution center in greater Los Angeles area.

The retailer in 2021 had entered into a new lease for an about 1.26 million-square-foot distribution center in Ontario city in California. The lease expires in 2039, its annual filing showed.

Lululemon also owns a distribution center in Groveport, Ohio, while leases majority of its other facilities located across the United States, Canada and Australia.