Pap
Still packing the model 28
Normal pack load includes 100 oz hydration bladder, GPS with extra batteries, compass, headlamp, 50 ft of rope, two carabiners, map, energy bars, first aid supplies including Sam splint ace bandage and quick clot, cell phone (off for emergency use only), bandana, hand sanitizer, sunblock, titanium spork, tweezers for cactus, duct tape, fire starter space blanket. That is all I can think of without dumping everything out.
I like to have enough stuff that if something not so good happens, I don't perish right away. Most places you will need a helicopter rescue if you need to be rescued in a timely manner.
It makes for a heavy pack, but this area is pretty unforgiving if you screw up

Peter
Once the weather gets cooler, I will have clothing to layer