The frame itself on an external frame pack is relatively simple to adjust. The telescoping frames can be shortened and lengthened to suit each individual carrier. The shoulder straps are also adjustable, however, due to their sheer size it involve a little bit of effort. Then there is also the waist band. This also needs to be adjusted so that the load will not be able to constantly shift as you try to hike. Finally, you have the compression straps. These can also be adjusted so that the load is held safely and securely within the confines of your pack.\r