Compromising & economising on performance rainwear in winter is a big mistake, if you are an avid, twelve months of the year golfer who is serious about looking after the finer details, then the Abacus Swinley Rain jacket deserves serious consideration. Swedish technology & know-how are invested throughout this superb Swinley Rain jacket. Abacus specialise in golf attire, especially waterproof & windproof garments. Abacus's 37.5 Technology improves the micro environment inside the garment to provide fabrics that evaporate moisture in the vapour stage before it becomes sweat. When your overheating, 37.5 technology speeds up evaporation & cooling, when you're cold the particles return to warm the body once more. 40-60% humidity is created the ideal comfort zone range. The active particles are derived from coconut shells & volcanic minerals. 37.5 Technology has been importantly approved as skin-friendly & also hypoallergenic, whist being permanent & will never wash out whilst laundering.