Regulator® fleece insulation provides phenomenal compressibility, light weight warmth and moisture transport, whether used alone or as part of a layering system.

The lofted hollow-core fibers of Regulator fleece insulation conserve body heat while allowing body moisture to wick uninhibited during sweat-inducing activity. They’re also lightweight and highly compressible for packing – a boon when every inch of pack space counts.

Regulator® Fleece Insulation provides exceptional breathability to keep you dry on the inside when you’re pushing the pace. And while Regulator fleece provides the same amount of warmth as a much bulkier fleece, it does so with lighter, more compressible materials. Since you stay both dryer and warmer, you’re able to maintain your comfort over a wide temperature range, which results in fewer layering changes and a lighter, less bulky pack.

Regulator® fleece Insulation may be worn alone in milder weather. When nasty weather looms, they complement our Climbing, Skiing and Snowboarding shells and Performance Baselayer pieces.

Regulator® insulation comes in four weights: R4, R3, R2, and R1.
R4 is our warmest technical fleece, with a stretchy wind-proof laminate sandwiched between a high-loft exterior and an R2 grid interior.

R3 is our plush, high-loft fleece that maximizes warmth in deep cold with minimal weight. It has Polartec® PowerDry side panels for an improved technical fit.

R2 is a short-sheared, high-loft fleece with R1 panels to improve fit and mobility for extended comfort on long approaches, ice climbs and ski tours. Its fur-like fibers offer superior warmth and lightweight breathability.

R1 is minimally designed and finely tuned for the full spectrum of mountain endeavors. Its high/low grid fabric traps heat to insulate and moves moisture off the skin.