Patagonia Men's R4 Jacket

The windproof Patagonia R4® Jacket is the warmest Regulator® fleece. The high-loft face fabric is windproof with full stretch. On the interior, an R2® grid provides superior thermal value and moisture management.

Things that can't be overdone: Deep powder, more cowbell and furnace-warmth fleece for the Haute Route in January. The R4® from Patagonia is the warmest fleece around, with improved Polartec® Windbloc® fabric made up of a high-loft polyester exterior and R2® grid interior; a windproof laminate sandwiched between creates a toasty, full-stretch package. Sonic-welding and micro-stitch technology on the zipper seams greatly reduce bulk, making the jacket more supple and give it a sleeker appearance. Microfleece lines the collar, cuffs and hem, and the two handwarmer and one chest pockets close with zippers. Offset shoulder yokes allow for pack-wearing comfort, and an interior wind flap prevents chill through the center-front zipper. Recyclable through the Common Threads Recycling Program.

POLARTEC® : THERMAL FABRICS The primary insulation layer among experienced outdoor enthusiasts for nearly two decades, Polartec® fabrics are available in a variety of unique textures and weights designed specifically to enhance performance in a variety of environs.

Polartec® Windbloc® Polartec® Windbloc® fabrics combine the warmth of Polartec® thermal fabrics with a polyurethane barrier membrane that allows moisture vapor transmission and is completely windproof and water resistant, eliminating the need for a windbreaker or additional shell. This reduces the weight and number of layers needed to protect and insulate. These fabrics are very durable, quiet, and non-pilling, and have enhanced stretch and recovery, making them appropriate for general outerwear and accessories where weather protection is desirable. Polartec® Windbloc® fabrics are ideal when the activity level is low or intermittent, and when cold and inclement weather demands high-performance outer protection. Benefits Windproof and water repellent Warmth without weight Stretch for active comfort Less noise than a hardshell Breathable Durable Machine washable

Polartec® Windpro® Proprietary yarns and a very tight construction greatly reduce the effects of windchill, the Achilles heel of traditional fleece. We have proven its effectiveness both in the lab and in the field. Polartec® Wind Pro® blocks the wind 4x more than traditional fleece. The Durable Water Repellent outer surface sheds rain and snow. Velour or pebbled inner surfaces efficiently trap air and provide a high warmth-to-weight ratio. Both surfaces of these fabrics are finished for maximum durability and pill-free performance. They retain their insulating ability and original appearance after repeated use and laundering. Because it is not a laminate, Polartec® Wind Pro® is also highly breathable, maintaining 85% of the breathability of traditional fleece to keep you from overheating. Benefits 4 times more wind resistant than traditional fleece Warmth without weight Highly breathable Water repellent Durable Machine washable