The 2103 Long Sleeve Jacket from Matuse Wetsuits is the jacket made specially for Tudor, in other words it's the Joel Tudor Jacket. You may be wondering why it's pricier than the others, well, the inside of the jacket is lined with a special SCS Alpha Metal, which means it's super lightweight as it doesn't absorb any water at all, and that 'silver metal stuff' increases warmth retention with it's ability to reflect your body heat. It's also super soft for extra comfort. The outside of the 2103 L/S tudor Jacket is 100% Hydrasilk, which aborbs 0% water, so it's basically like a windbreaker in the water.