Clothing and footwear manufacturer Kenneth Cole Productions Inc on Tuesday posted a healthy 15.4 per cent year-on-year rise in second quarter net profit as lower sales were offset by reduced costs. The New York City-based firm, reported net income for the 13 weeks to June 30 climbed to $6 million, or 30 cents per share, from $5.4m, or 26 cents a share, in the year-ago period, although gross margins fell to 45.4 per cent from 46.4 per cent.