The 10kg ceiling, and why it exists
Your duffel travels on a porter's back — two of them per porter, capped at 20kg total by our own policy, stricter than the law. Every unnecessary item is weight on someone's knees. The teahouse reality: beds, blankets and hot food exist at every stop. You are packing for temperature swings and feet, not survival.
Layer math
Three layers beat one giant jacket: a merino base (worn 3 of 4 days, trust us), a fleece or light synthetic mid, and a shell for wind and afternoon weather. Add a down jacket — we provide -15°C-rated ones in Kathmandu on a return basis, free — and you're covered from +20°C valleys to -15°C passes. Two pairs of socks per day of the trek? No. Three pairs, total, rotated.
The untouched list
Things guests reliably bring and never use: travel towels bigger than a hand towel, more than one book, water purification tablets AND a filter AND purification drops (pick one — we recommend the filter bottle), jeans (never jeans), and a first-aid kit for a scout camp. The things guests wish they'd brought: lip balm with SPF, a power bank rated for cold, sandal-type recovery shoes, and earplugs for teahouse walls.
Provided, not purchased
Sleeping bags (graded to -20°C), down jackets, duffels, walking poles and comprehensive first aid all come with every KORA trek on a return basis — it's on your trip page under Packing. Rent the exotic stuff in Thamel if you must; buy only good boots, and break them in months, not days, before you fly.
Trek it yourself