- R1® fabric provides excellent stretch, warmth, moisture management and breathability in a variety of temperatures
- Fabric's unique grid back structure is moisture-wicking and highly compressible
- Exposed elastic waistband
- Smooth jersey face slides easily against overlayers
- 6.5-oz 98% polyester, 2% spandex (Polartec® Power Dry®), treated with a wicking finish.
- 312 g (11 oz)
- Made in USA.
Regulator Insulation provides phenomenal compressibility, light weight warmth and moisture transport, whether used alone or as part of a layering system.