The following items are recommended for a typical multi-day trek in Nepal. Some treks have teahouses throughout while others require camping and the necessary equipment.
Sleeping
Tent (necessary for treks with camping)
Sleeping bag (–15° bag will suffice on most treks)*
Sleeping pad
Silk liner
*Many nights at lower elevations will be hot, but because there will likely be a few very cold nights at high elevation a cold weather bag is unavoidable. At low elevations you can sleep with the silk liner only and using it later extends the life of your bag (oil from skin is bad for expensive down).
Hiking
Backpack (size depends on whether or not you have porters)
Hiking boots* (break them in beforehand)
Camp shoes (your reward after a long day)
Wool socks (bring a few pairs of varying thickness)
Lightweight trekking pants
Trekking shorts
T-Shirts (lightweight wool is great)
Underwear
*You will be hiking through a wide range of terrain from mud in warm weather to snow in cold weather. The trail will be rocky throughout. The safest bet for Nepal trekking footwear is full backpacking boots, which provide good support and protection from the elements. If there is a high pass on your trek, you may be walking on snow and the conditions will be cold. A good compromise is to bring backpacking boots and trail shoes—you can use the trail shoes for camp and interchange the two depending on the conditions and how you feel.
Cold Weather
Long underwear/Wool thermals
Sweater
Fleece
Waterproof jacket and pants
Heavyweight pants for high elevations (also good for camp)
Heavy down jacket (can be rented in Kathmandu)
Winter hat
Winter gloves
Accessories
Water purification (pump, tablets, or SteriPen; bring from home)
Water bottles (at least 3 liters total capacity)
Baseball cap (the sun is strong at all elevations)
Hiking poles (lessen the impact on your joints)
Sunglasses (essential when you cross snow line)
Head lamp with extra batteries
Reading materials (Kindle may be best)
Journal and pens
Camera with extra batteries
Daypack (for your rain jacket, snacks, camera, etc.)
Heavy-duty duffle bag (preferred by porters)
Gators (many people wear them but they are not mandatory)
Personal Supplies
Sun screen
Hand sanitizer
Toiletries (toothbrush, toothpaste, deodorant, floss, etc.)
Biodegradable bar soap
Face/body wipes
Biodegradable washing liquid
Throat lozenges, lip balm
Medications (Ibuprofen, others if necessary)
Extras
Duct tape (fixes just about everything, at least temporarily. To avoid carrying an entire roll wrap the desired amount around a pencil)
First aid kit (with moleskin for blisters)
Extra passport photos and photocopies of your passport
AS given below checklist might be easy whats you need before you leave for Trekking in NEPAL.
Head
Sun hat or scarf
Light balaclava or warm fleece hat
Sunglasses with UV protection
Upper Body:
T-shirts
Light and expedition weight thermal tops
Fleece jacket or pullover
Fleece Wind-Stopper jacket (optional)
Waterproof (preferably breathable fabric) shell jacket
Down vest or jacket
Lower Body:
Under Garments
Hiking shorts
Lightweight cotton long pants
Light and expedition weight thermal bottoms
Fleece or wool pants (seasonal)
Waterproof (preferably breathable fabric) shell pants
Feet:
Thin, lightweight inner socks
Thick, warm wool hiking socks
Hiking boots with spare laces
Camp shoes (sneakers and/or sandals) Gaiters for hiking in winter to the base camp
Craompons for shoes
Hands:
Lightweight gloves
Heavyweight gloves or mittens with a waterproof shell outer (seasonal)
Accessories:
Sleeping bag rated to zero DC *
Headlamp (e.g. Petzl Zoom) with spare bulbs and batteries
Trekking Bags/Duffel bag *
Basic First Aid Kit
Large plastic bags - for keeping items dry inside trek bag
Daypack (approximately 2500 to 3000 cubic inches)
Trekking Poles
Water bottle (2) or camel bag
Ear Plug (who know some people on group are snoring)
Personal First aid kit
Lip guard
Passport copies
Pocket knives
Flash light
Toiletries:
1 medium sized quick drying towel
Tooth brush/paste (preferably biodegradable)
Multipurpose soap (preferably biodegradable)
Deodorants
Nail clippers
Face and body moisturizer
Feminine hygiene products
Small mirror
Personal Hygiene:
Wet wipes (baby wipes)
Tissue /toilet roll
Anti bacterial hands wash
Extras | Luxuries:
Binoculars
Reading book
Trail Map/guide book
Journal & Pen
ipod
Pencils and small notebooks
Travel game i.e. chess, backgammon, scrabble
Swimming customs