American menswear company Haggar Clothing Co has calculated that over 80m post-consumer plastic bottles have been upcycled through its eco-friendly E-CLO apparel line, which includes the LK Life Khaki brand.

The pants contain a blend of cotton and Repreve yarn, which is made from recycled materials, including post-consumer plastic bottles. Each pair of pants contains the equivalent of seven recycled plastic bottles.

"With the use of Repreve in our E-CLO and LK Life Khaki apparel, we are proud to incorporate sustainability into our product offering," says Michael Stitt, CEO of Haggar Clothing Co.

The company has highlighted its eco-credentials in recognition of Earth Day 2013, which takes place today (22 April).