PP Graphene Alpaca × NASA Superconductive VestWrap yourself in next generation warmth and comfort with the PP Graphene Alpaca NASA Superconductive Vest, a high performance cold weather essential that fuses cutting edge graphene technology with the natural softness of alpaca wool developed with innovation inspired by aerospace research. Key Features NASA inspired graphene technologyMade with advanced graphene infused fabric, this vest helps regulate body temperature through far infrared heat