Under Armour on Wednesday reported first-quarter net income of $8.7 million, compared with $2.5 million for the same period in 2005. Earnings for the Baltimore maker of sports attire soared to 18 cents per share, compared to 5 cents per share for the same period last year.

Licensing revenue increased 65.8 percent to $2.4 million from $1.4 million for the first quarter of 2005. This reflects strong results from existing licensing partnerships and the shift to licensees of certain products formerly in the accessories category, according to Under Armor.