This decent-looking t-shirt is part of the new Agravic trail-running range from Terrex, the off-road-oriented wing of titanic Teutonic sports brand, adidas (the motherbrand is only mentioned very subtly in the inside rear of the shirt, but the signature three-stripe logo on the front gives away the open secret that it’s an Adidas top). Agravic means to have no gravity, and while it can’t claim to float in the air, this entire range has been designed to weigh very little. The Adidas Terrex Agravic Trail Running t-shirt is especially light, not least because the entire back panel is made from a mesh material, intended to both provide ventilation and reduce heft.

I’ve been trail testing the the Agravic Trail Running t-shirt over the last couple of months to see how it compares to the . With a crew neck and slits in the hemline to help with unimpeded movement, this running t-shirt is made entirely from polyester, a minimum of 70% of which is recycled (we give adidas reasonably high marks for this, but I can’t really see why it’s not made from closer to 100% recycled yarn). Being synthetic, this material is hardwearing and long lasting, as well as being light.

It’s also hydrophobic, so it won’t take on water and grow heavy if you get caught out in the rain, and if it does get wet, it won’t immediately lose its thermal properties, and will dry out very quickly. That said, the aforementioned thermal properties are clearly a secondary concern for the designers of this.