The AION Race Team Warm-Up Jacket is an ultra-light, performance layer made to move with you. Wear it during warm-ups, early miles, or layered over a long sleeve for cold-weather runs.

Thin and streamlined with a fitted profile, this jacket delivers warmth without bulk—perfect for athletes who want freedom of motion and clean aesthetics.

Details

• Ultra-light performance fabric

• Designed for warm-ups and running

• Ideal as a top layer over a long sleeve in winter

• Thin, clean, athletic fit

• True to size

• Built for movement, not restriction

A simple layer.
Race-ready.
Designed for motion.

Size & Fit

This jacket uses overlap sizing due to its unique, athletic cut.

Each size falls between standard sizes:

• XS–S = between XS and Small

• S–M = between Small and Medium

• M–L = between Medium and Large

• L–XL = between Large and XL

The jacket is thin and fitted, designed for movement and layering—not bulk.

If you’re between sizes or prefer a looser fit, size up.
If you want a cleaner, more athletic fit, stay true to your normal size range.