The Heat Trap is an incredibly warm fleece jacket made from Earth Sea Sky's BiPolar Polartec 300 material.

BiPolar Polartec 300 technology gives each side of the fabric a very different structure. The inside surface has long, vertical, shaggy pile fibres to trap air and maximise warmth and wind resistance. The outer surface has short, vertical fibres to improve abrasion resistance and water repellency. BiPolar fabrics are 15% warmer compared to standard Polartec fabrics of the same weight.