Medium or large hipbelt, talon and top lid amazing lightweight high volume backpack.  Compresses well for small volumes.  Extra strap length has been trimmed and load shelf removed.  Please see pics.  Modifications lightened the pack but may alter performance if you were counting on using load shelf to haul wood, odd shaped large objects etc.  I have had 3 SO packs and never used this feature and by removing got the weight down by a couple of ounces.