M Activity PT Jkt IAHead for the hills anytime of the year in this super thermal, Interactive walking jacket. January to December, enjoy the best of country and coastal walks with our extremely versatile, ultra warm jacket. The Polartec Thermal Pro fleece gives you all of the great warmth of traditional fleece, while its soft feel fabric is extremely durable so it looks great for longer. Plus, for extra versatility, the Interactive zip means you can attach it to any