Merlin Alton II D3O Leather Jacket - OxbloodMerlin Alton II D3O Leather Jacket This timeless style was first introduced in the summer of 2017 and has been one of the most popular leather jackets in the Merlin collections. Alton II though sees improvements from years of consumer testing and feedback as well as new impact protection, in the form of D3O. Riders can now benefit from a revised fixed mesh lining which allows for adjustable elbow armour positions, a fold back collar for summer riding,