Built to race. Ready for the rough stuff. The FastRock™ Sleeveless is designed to handle high-output efforts on the toughest terrains. It’s ultra-light, super breathable, and powered by TrailGuard™ fabric with highly durable nylon to resist abrasion and reduce pilling from packs.

We love it for: trail running and racing

• Relaxed fit
• Waist length
• TrailGuard™ fabric: 89% Nylon, 11% Spandex
  • Highly durable nylon body, designed to reduce pilling from wearing running packs
• Bonded Seams
  • Created with a patented technology, the seams are stronger than traditional bonding and create a sleek, seamless look
• Rear perf panel for breathability
• Reflective heat transfers
• Machine wash cold, tumble dry, don't bleach
• Designed in California, made abroad