EXPEDITION LOADOUT ARCHITECTURE // PACK-OS v3.8
Offline Cached
Ultralight Gear Builder & Weight Simulator
Synchronous backcountry payload tuning with real-time center of mass, thermal rating, and bear canister volume verification for High Sierra itineraries.
Pack Base Weight
UL VERIFIED
9.84
lbs
verified Target < 10.0 lbs met
Consumables
2.5L H2O + 48h
6.12
lbs
Food 3.8 lbs • Water 5.5 lbs dynamic
Skin-Out Weight
All Systems
18.35
lbs
Base + Worn (2.39 lbs) + Fuel
Caloric Reserve
local_fire_department
3,800
kcal/day
142 kcal/oz efficiency density
Active Segment
thermostat
High Sierra Basin
28°F Night Low • 11,400 ft
bed
The Big Three
Shelter • Sleep Chamber • Ultralight Carry
4.07
lbs (41.4%)
Dyneema Composite 1P Trekking Pole Tent
DCF 0.55oz
Includes 6x Easton Carbon core pegs (1.2 oz)
14.2 oz
0.89 lbs
950-Fill Down Quilt 20°F (Sub-zero rated)
Thermal Guard
7D Ripstop Shell + Draft collar synch cords
18.6 oz
1.16 lbs
NeoAir XTherm NXT Sleeping Pad (R-Value 7.3)
Alpine Spec
WingLock Valve • 70D nylon bottom barrier
15.5 oz
0.97 lbs
Frameless Ultra 200 Fastpack 40L (Running Harness)
Ultra-Weave
Dual sternum straps + Bottom trash/snack pocket
16.8 oz
1.05 lbs
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Hydration & Camp Kitchen
Water Filter • Cook Gear • Mandatory Sierra Bear Container
2.31
lbs (23.5%)
Hollow-Fiber Squeeze Micro Filter + 2x 1L TPU Flasks
0.1 micron absolute • 100,000 gal field lifespan
5.0 oz
0.31 lbs
Titanium 550ml Cook Pot + Micro Canister Stove
Nesting lid with vent • Folding piezo flame head
3.9 oz
0.25 lbs
Bearikade Carbon Fiber Ultralight Canister
NPS Mandate
Aerospace composite cylinder • 500 cu in food capacity
28.0 oz
1.75 lbs
dry_cleaning
Worn & Layering System
Skin-Out Thermal Architecture • Pack Stash Shells
0.68
lbs pack / 2.00 lbs worn
Polartec Alpha Direct 90 Active Hoody
Stashed
Hydrophobic insulation • High CFM breathability
4.8 oz
0.30 lbs
Pertex Shield 3L Ultralight Storm Shell
Stashed
20,000mm HH waterproof • Taped microporous seams
6.1 oz
0.38 lbs
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Vibram Megagrip Runners + Merino Socks + Shorts
Skin-Out Worn
Zero Base Pack Weight Impact (Counted in Skin-out total)
32.0 oz
2.00 lbs WORN
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Electronics & Redundancy
Iridium SOS • Micro Energy Storage • Illumination
0.65
lbs (6.6%)
Iridium 2-Way Satellite Communicator + SOS Beacon
Critical Comm
Global constellation sync • 14-day battery cycle
3.5 oz
0.22 lbs
10,000 mAh Carbon-Fiber Frame Powerbank
Pass-through QC3.0 + Kevlar USB-C braided line
5.4 oz
0.34 lbs
Nitecore NB Ultralight Headlamp (400 Lumens)
USB-C rechargeable • Red auxiliary night-vision diode
1.5 oz
0.09 lbs
medical_services
First Aid & Repair Kit
Leukotape • Dyneema Patches • Leave No Trace
0.31
lbs (3.2%)
Custom Backcountry Medical Mini-Kit + Leukotape P
Suture strips, antihistamine, ibuprofen 800, tick tweezer
2.9 oz
0.18 lbs
Titanium Cathole Trowel + Tenacious Tape roll
Camp soap concentrate (15ml) & DCF rip-stop tape strip
2.0 oz
0.13 lbs
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Torso Balance: A+
Payload Distribution
Shelter & Sleep System
41.4% · 4.07 lbs
Bear Canister & Kitchen
23.5% · 2.31 lbs
Layering & Weather Shells
6.9% · 0.68 lbs
Telemetry & Power
6.6% · 0.65 lbs
First Aid & Trail Repair
3.2% · 0.31 lbs
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High-Lumbar Load Vector
74% of base load rests precisely between T8-L3 vertebrae. Minimal shoulder pull, optimal gait cadence.
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AI Trail & Alpine Sync
John Muir Trail • Evolution Basin Pass
warning
Sub-Freezing Alpine Inversion Night 2
NOAA High Sierra station reports 28°F night low with 35mph ridgeline gusts. Your 20°F quilt has a safe +4°F buffer, but wind chill may lower comfort.
Recommendation
Add 1.5 oz Alpha Balaclava to pack stash
inventory_2
78% Full
Internal 40L Volume
31.2 Liters occupied • 8.8 Liters reserve clearance available in roll-top.
Big 3 Vol
19.2 L
Bear Can
8.0 L
Roll-Top Left
+8.8 L
military_tech
Top 8% Elite
Community UL Benchmark
Benchmarked against 3,420 logged PCT & JMT thru-hiker loadouts across Forester Pass.
YOU (9.84 lbs)
Median (16.2 lbs)
🎉 Your loadout is lighter than 92% of active backpackers on this corridor.
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Expedition Manifest #CT-UL-8829
Autosaved 1m ago
SHA-256 Checksum: 8a4f91b • Ready for offline Garmin telemetry sync