Aside from the obvious advantage of being able to get in and out of the suit unassisted, self-don suits have other positive features as well. The telescoping torso on a self-don suit allows for an excellent fit with complete range of motion. That is to say, the suit is actually fitted at the legs and hips, while the telescoping torso provides the extra material needed to reach or bend without adding extra bulk. It also means a stock size suit is more likely to fit you as the telescoping torso allows for a wider range of people to fit the same size and fit it well. Not having a zipper across the shoulders will dramatically increase the comfort of the suit as there is no pressure from the zipper when you move your arms and shoulders. The increased comfort and improved fit of the self-don suit will make your diving more enjoyable.