Biking giant Trek officially entered the 3D printed saddle arena with its new line of lattice-structure comfort tech that Specialized and Fizik fans have been buzzing about for years. Trek’s pitch is that its version reduces hotspots and sliding by letting the saddle move with the rider, not against them. It’s flexes where you need it (firm for bones, soft for squish) and weighs less than your water bottle. AirLoom: from $175.