US-based designer and developer of athletic footwear K-Swiss Inc. has posted net earnings of $18 million for its first quarter, ended March 31, compared with $24.9 million in the prior-year period.

Total revenues decreased 18.3% to $122.6 million from $150 million. Domestic revenues fell 39.7% to $62.4 million, although international revenues increased 29.2% to reach $60.2 million.