This is the top range Alder for winter. It incorporates all the highest quality materials you could wish for. Alder have used the softest neoprene foam throughout this suit and some amazing hrdrophobic nylon on the outside. All the seams are internally neoprene taped to ensure a long-lasting watertight seal. The Luxe uses solvent free Aqua Alfa glue for a safer and healthier enviroment.