The World Cup Aero Pack is Ski Trab's lightest race pack, designed as a minimalist system to shave weight. Despite that constraint, the form fitting pack is actually featureful enough to tour with on those farther and faster days with a ski carry system, external skin pocket, and a comfort elastic shoulder system. The pack is designed to fit very closely to your shoulders so it doesn't slop around while you're racing and keeps you aerodynamic. As such it comes in two sizes, with the larger size appropriate for those over approximately 5' 10" or 155 lbs. The shoulder straps are elastic instead of adjustable with buckles, and there is some thin webbing with an adjustable buckle to secure it to your waist.

• 15 liter (915 cubic inches) capacity is enough for your safety gear and essentials for the day.
• Ski carry loop with a hook on the right shoulder strap can be used while the pack is on your back (fits tails up to ~100mm).
• Big stash pouch across your lower back with an adjustable elastic cinch for skins or other items you want to grab in a hurry.
• Special headlamp or security pocket on top so you don't fumble around in the dark.
• The pack has been whitelisted by the ISMF so you know it's legit for those sanctioned rando races.

Update 2018/19: The WC Aero pack was replaced by a new version.