Tag Archives: 2019 Specialized Therminal Alpha Jacket in Black

2019 Specialized Therminal Alpha Jacket in Black

It’s typically been an fleece jersey with rear pockets that only adds to bulk and weight. Insulation with a high warmth to weight ratio like down feathers or polyester fiber-fill are ideal but those materials need to be encapsualted with a coated fabric to contain them cutting breathability down significantly. Our solution is polartec alpha