Deuter's SL designation stands for "Slim Line" fit, although slim is only a small part of the reason that these packs fit women so well. The whole proportions of the SL back system differ from their usual Unisex offering. Shorter and narrower shoulder straps are designed for shallower shoulders with a less rounded back and neck area, their curves also contour away from the breast area. A more conically shaped belt (where fitted) follows a more typical female pelvic/hip shape.
