Twitter said on Wednesday it was partnering with U.S. retailers to help them sell products through a "Buy Now" button in tweets. The "Buy Now" feature, which was initially rolled out to a small percentage of U.S. users last year, allows a customer to buy a product directly from a tweet.

Twitter said it was working with e-commerce websites such as Bigcommerce, Demandware Inc, and Shopify, and retailers and brands such as Best Buy, Adidas AG and PacSun.

Twitter is truing to boost user growth, after the company's second-quarter monthly average users grew at the slowest pace since the company went public in 2013.

The company has tied up with payment processor Stripe to let shoppers use the "Buy Now" button.