From buying organic produce, to thinking twice before purchasing a pair of polyester underpants, there are a myriad of ways that gents can lend the environment a helping hand. An eco-friendly option for style-conscious men is the underwear from Gässling. As part of its sustainable ethos, the Swedish company eschews the fashion-industry norm of producing new collections each season. Instead, the underwear is only redesigned when new improvements are available. Each garment is made from organic cotton and an eco-friendly dyeing process is used.