For a truly custom fit on Granite Gear Cirrus, Stratus and Nimbus packs you can swap out shoulder straps. To find the ideal shoulder strap size, measure your chest. Shoulder straps come in two widths also. The trim fit shoulder strap is standard on most packs except the Expedition packs which sport a wide fit shoulder strap that can comfortably carry loads over 60 lbs. Granite Gear shoulder straps fit both men and women well.