Jeans giant Levi Strauss & Co has more than doubled its second-quarter profit after a reduction in charges and lower product costs helped offset flat revenues.

The San Francisco based company also said it "offset the impact of a challenging US wholesale environment with growth in our direct-to-consumer and international businesses," according to president and CEO Chip Bergh.

In the three months to 29 May, net income surged 163% to $31m, up from $12m in the same period a year earlier. The increase reflected lower restructuring and related charges and a debt extinguishment loss recorded last year.

Revenues were flat at $1.01bn, with unfavourable currency fluctuations dragging the top line down by $14m.

Revenue in the Americas, Levi's largest region, fell 5% to $589m, contrasting with rises of 8% in both Europe and Asia to $241m and $182m respectively.

On a reported basis, gross profit in the second quarter grew to $517m compared with $500m a year ago, despite unfavourable currency translation effects of $5m.

Gross margin rose from 49.4% to 51.1% of revenues, mainly due to international and direct-to-consumer sales growth – but also helped by lower negotiated product costs and streamlined supply chain operations, the company said.