An essential go-to for winter belays, exposed bivies and cold alpine terrain the world over, the Black Diamond Solution 4.0 Parka is a highly insulating layer with updated durability to endure bail-worthy conditions. The Solution 4.0 was formerly known as the Belay Parka. Built to endure bail-worthy belay conditions on single-pitch winter routes and huge alpine faces alike, the Black Diamond Solution 4.0 Parka lets you hunker down while your partner battles it out on the sharp end.BD's warmest synthetic jacket, the Solution 4.0 Parka features 200gsm mapped Primaloft Rise, plus Primaloft Gold Cross Core, insulation throughout the body, shoulders, and hood. A 50D ripstop shell with a DWR treatment protects from the elements while a 20D nylon taffeta liner adds an extra layer of warmth. A two-way zipper allows access to your belay device, and oversized hand, chest and internal drop pockets store gloves, water bottles and other on-route essentials. Features: DWR finish without intentionally added PFAS Adjustable climbing helmet-compatible hood Lightweight stretch cuffs Two-way belay device friendly YKK® front zipper with DWR treatment and windflap Single-pull cord adjust on the hood and hem Two zippered hand pockets, two zippered chest pockets and two internal drop pockets Left chest pocket has internal stretch mesh pocket