This is the lightest Stan's Rim that they produce

Materials: The Sprint Ultra uses TLD's new Bluesign approved Ultra Tech Fabric with durable stretch fabric in key areas for ultimate freedom of movement

Max Lumens: 800

The Pro version also features a dual-density

Hinged lever clamp

100 Percent Airmatic Pants - XS-28 - Black netsuite-webdata-created This is the lightest Stan'sThe 100% Airmatic Pants have you covered through any conditions the trail throws at you. By combining the fitment of the R Core X pants with the 4 way stretch material and mountaineering inspired buckle system featured on the Airmatic shorts, these new pants promise to deliver warmth, flexibility, and ventilation in the most comfortable trail MTB pants out there. Features: DWR mid weight polyester spandex 4 way stretch woven fabric Mountaineering