Swimwear manufacturer In Mocean Group is growing its headquarters at 463 Seventh Avenue to more than 53,000 square feet after inking a lease for an additional 23,785 square feet at the Garment District office building, Commercial Observer has learned.

In Mocean signed a 10-year deal last month for the entire ninth floor at the 22-story, 478,000-square-foot property at the northeast corner of West 35th Street. The new lease adds to the company’s existing 29,659-square-foot presence across the 15th, 20th, 21st and 22nd floors at 463 Seventh Avenue, to take its total footprint at the building to 53,444 square feet.