Made from recycled yarns to save resources and decrease emissions Close, second-skin fit for streamline performance Breathable, sweat-wicking fabric draws moisture away from the skin Added stretch for increasd support and an unrestricted range of motion Secure back and thigh pockets for essentials Reflective trims increase visibility in low-light conditions Ronhill's founder (that's Ron Hill, if you didn't know)has a PhD in textile chemistry, so fabric is a pretty big deal for them. So it's no surprise that the eco-conscious, breathable, moisture-wicking, fabric they've found for these tights feels just right next to the skin. Made from recycled yarn, they're amazingly supportive, while still lightweight and stretchy enough not to slow you down. But don't think Ronhill has skimped out on the practical side of things: the secure pocket and stash pocket on the thigh are just two of the smaller details that'll make a big difference to your run. As part of their innovative Revive series, the leggings also feature a discreet 50th-anniversary graphic to celebrate Ronhill's half a century of helping runners push themselves further.