For starters, I am not interested in a XUL kit because it is not something I would use all the time. However, since I do a lot of hiking in So Calif, it is easy to get under 5 lbs excluding consumables. I do it all the time. But I can leave stuff at home like rain gear or even a shelter, so the kit would not really be a "bona fide" XUL kit. Plus the kit is for a weekend or 3 days. I really look at what you can do with your kit for a week or more, without any kind of re-supply. IMO a XUL kit should be something you could take on a trip longer than a weekend.
The other thing is that I often hike where water is not plentiful, so a light pack will not be comfortable, given the amount of water that I have to carry at times. The Sierras are different as water is usually plentiful.
IMO, any kit should include:
- Warm enough quilt/bag
- Rain gear
- Stove for 'emergency' hot drinks/food
- 1st Aid
I do not always bring a stove, map, or compass. In familiar territory sometimes I leave the map and compass home.
FSO including consumables is the most important weight, because it determines if your pack is up to the task.
Here is a kit I quickly put together, with stuff I have and use.
GG Murmur Pack (modified) 7.0 oz
MLD Silnylon Pro Poncho/Tarp 8.8 oz
MLD Ti Stakes (6) 1.8 oz
1/2" X 19" X 44 Padded Frame Sheet 3.6 oz
Ephinay Quilt 12.0 oz
Montbell U.L. Windshirt 2.7 oz
Outdoor Research PS50 Watch Cap 0.5 oz
Caldera Cone GVP Keg Stove Kit 3.0 oz
Cuben Food Sack 0.2 oz
Platypus 1 liter water sack 0.9 oz
Snowpeak Titanium Spork 0.5 oz
Bandana 0.9 oz
First Aid Kit: 1st Aid Ointment (2) 0.1 oz
First Aid Kit: 1st Aid Towelettes (2) 0.2 oz
First Aid Kit: 2" X 2" gauze (2 ea) 0.1 oz
First Aid Kit: Cuben sack 0.1 oz
First Aid Kit: Leuko Tape 0.1 oz
First Aid Kit: Medium Bandaids (4 ea) 0.2 oz
First Aid Kit: vial w/7 Advil 0.3 oz
Personal Kit: Derma-Safe folding knife 0.3 oz
Personal Kit: Dr. Bronner's soap 0.4 oz
Personal Kit: Finger Toothbrush 0.1 oz
Personal Kit: mini BIC Lighter 0.3 oz
Personal Kit: Toilet paper 0.8 oz
Zip Lock Bags 0.3 oz
Map 1.0 oz
Silva Polaris Compass 0.9 oz
Asics Piranha SP 2 Racing flats 10.6 oz
BPL Merino Wool Hoody (small) 7.5 oz
Salomon Running Shorts (M) 7" Inseam 3.8 oz
Wright Socks 1 1.6 oz
Fox 40 micro whistle 0.2 oz
GG LightTrek 4 Trekking Poles 6.8 oz
Maui Jim MauiReaders Sunglasses 0.6 oz
Photon II Micro Light (on lanyard) 0.3 oz
Timex Expedition Watch 1.2 oz
Pack 7.0 oz
Shelter/Rain gear 10.6 oz
Sleeping 14.0 oz
Pack Base Weight: 2 lbs 13.5 oz
Worn 2 lbs 0.6 oz
FSO (no consumables): 4 lbs 14.1 oz
Some comments on the gear:
Base weight is almost 3 lbs. I could easily get it under 2.5 lbs by purchasing a small cuben pack and a cuben poncho/tarp. I am not interested in owning either.
I could take only my cuben tarp and wrap it around me for rain gear. I did that once. Very impractical. So I included the MDL poncho/tarp. I have a lot of use with the MLD Poncho/Tarp to include light snow. But I prefer a large cuben tarp (~ 8' X 10') and my Marmott Essence jacket.
My old Murmur stripped down was about 6.3 oz. But I gave it away last week, so I entered the weight of my newer one. It is stripped down.
I have an early enLIGHTened Ephinay quilt. It is 100% cuben shell. So it is water proof, except for the seams. It is fine under a poncho tarp. But other quilt materials may require a bivy for those who would consider only a poncho/tarp and no bivy.
The padded frame sheet is one of Steve Evans' and is water proof. Kinda of thin and I have slept on it, but not real comfortable unless I can find some duff or soft sand. After a few days on the trail, it is okay... just the first couple of nights are tough. But I included it as my only mattress, because I have used it that way in the past.
I need a windshirt and prefer my Houdini, but I have used the Montbell a lot.
I only included a 1L platy, assuming water will not be scarce.
I could use a plastic spoon, but I never do so I put in the Ti spoon, because I will never change.
I did not include an insulation layer. I can wrap up in my cuben quilt, and have done so. But normally I take by MB ExUL down jacket.
The Piranha shoes will easily do a 3 day trip with long miles, I have done it many times. But volcanic rock will ruin the soles in 3 days.
Nowadays, in 3 season weather, I normally wear Rail Rider eco-Mesh pants. But sometimes I only wear shorts. For years I only hiked in Patagonia Baggies.
I rarely take a camera, so I left it out.
I could leave the watch home, but I take one on almost every trip so I put it in the list.
I use water tablets, so they are consumables.
I can get by without trekking poles, but in the desert it is hard to find suitable tent poles. So I left them in.
I have a dark complexion and live in the desert, so I can get by without a hat. A bandanna can do double duty.
I can get by without sunglasses, but old age makes it hard to see up close, so I included my bi-focal Maui Jim sunglasses.
I am a curmudgeon and bugs hate me, so no DEET.