The Mizuno Breath Thermo biogear base layer is part of the new Mizuno 2018 autumn/winter collection. This base layer benefits from Mizuno\'s revolutionary Breath Thermo fabric technology which possesses the unique ability not only to insulate but also to generate warmth by using minimal quantities of released body vapour. This technology was originally engineered to combat much colder climates but has now been adapted for golf from its origin as ski base layers. This is a soft, warming, stretchable base layer which allows the golfer to move and swing without restriction whilst maintaining their comfort levels. It also has the added benefit of being a compression fit which reduces muscle fatigue.