Cho-Oyu Gear List And Rental Form

Rental Sizing and Shipping Information Below

Climbing Equipment

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Ice Axe w/Leash
  General mountaineering tool. Sizing is important: under 5'7" use a 60cm tool; 5'7"- 6'1" use a 65cm tool; over 6'1" use a 70cm tool. (Too short is preferable to too long). No rubberized grips-they are heavy and do not plunge well into the snow. Make sure that you have a leash that is designed for use on a glacier axe or a leash that you make from 9/16 webbing.
Ice Axe

With flat rather than 'cookie cutter' frame rails. Your crampons should be steel, not aluminum for strength and durability. A combination heel bail/toe strap is a more universal system than a heel and toe bail system. We strongly recommend crampons with anti-balling plates

  Or bring 40 feet of flexible 6mm acessory cord to make into prussiks.
Accessory Cord

Alpine Climbing Harness
  Harness should fit over all clothing, have gear loops, adjustable leg loops and be reasonably comfortable to hang suspended in. Make sure you can get into the harness without having to step through any part of it.
Climbing Harness

  Carabiners: Locking (3); Standard (2)
  2 Twist lock & 1 small screw gate locker; 2 standard ovals recommended.

    Rappel/Belay Device  
      1 device that is tube style which allows for a wide variety of uses as opposed to a figure-8 style.
Belay Device

Climbing helmet. Must be adjustable to fit, with or without hat or balaclava on.

Ascenders (1) One right or left.

Adjustable 3 section Ski/Trekking Poles w/ Snow Baskets
  For stability on ascents and descents. Extremely important if you have knee problems. Must bring both snow baskets and trekking baskets.
Trekking Poles


  Light hiking boots or trekking shoes
  For day hikes and trek to Base Camp. The trail to Base Camp is rocky and rough. Shoes that are light weight, high comfort, plenty of room in the toe bed, with good support are important.
Trekking Shoe

    Tennis shoes or low top shoes.  
      For international travel and town days. Optional.
Running Shoes

  High Altitude All-In-One Mountaineering Boot (also called triple boot or single boot system).
  Expedition boot that is a high altitude double boot with an integrated gaiter.
High Altitude Mountaineering Boots

  Fully Insulated Overboots. Not needed with Single Boot System.
Insulate Overboot

Gaiters. Optional if you are not bringing the Single Boot System.

  Trekking or Synthetic Socks
  3 pair
Warm Socks

  Wool or Synthetic Socks
  4 pair heavyweight socks to be worn over the liner socks. When layering socks, check fit over feet and inside boots.
Warm Socks

  Liner Socks
  4 pair of smooth thin wool, nylon or Capilene to be worn next to the skin. This reduces the incidence of blisters and hot-spots and makes the outer sock last longer before needing to be changed. They should fit well with your heavyweight socks.
Liner Socks

    Camp Boots.  
      Optional. Insulated boot for Advanced Base Camp.
Camp Boot

  Optional. Down Recommended.

      Everest Footwear Note: A High altitude double plastic boot in conjunction with a fully insulated overboot can substitute for the High Altitude All-In-One you will want to bring a pair of gaiters for lower on the mountain before switching to the insulated overboot.

Technical Clothing

  Lightweight Long Underwear ( M | W )
  2-3 pair tops & bottoms, Capilene, other synthetic or wool. No Cotton. Lightweight is preferable as it is more versatile (worn single in warmer conditions and double layer for colder conditions.) Zip-T-neck tops allow more ventilation options. One set of white for intense sunny days on the glacier and one pair of dark for faster drying gives the most versatility.
Lightweight Long Underwear
M | W

  Heavyweight Long Underwear ( M | W ). 1 pair. Expedition weight Capilene. (Alternative: one-piece suit)
Heavyweight Long Underwear
M | W

Soft Shell Jacket ( M | W )
  Mid-heavyweight. A full-zip version is easier to put on and has better ventilation than a pullover.
Soft Shell Jacket
M | W

Soft Shell Pants ( M | W )  
      These highly breathable, water repellant, 4-way stretch, durable pants are worn when conditions are mild.
Soft Shell Pants
M | W

Insulated Synthetic Pants w/ full separating side zippers ( M | W )  
      This is vitally important for ventilation and for the safety and ease of dressing up or down when conditions change in the middle of a climb.
Insulated Synthetic Pants
M | W

    Down Jacket ( M | W )  
      Optional. Lighter weight second jacket allows you to leave your down parka higher on the mountain as we establish the higher camps.
Insulated Synthetic Jacket
M | W

Hard Shell Jacket w/ hood ( M | W )
  We recommend a waterproof breathable shell material with full front zipper, underarm zips, and no insulation. This outer layer protects against wind and rain.
Hard Shell Jacket
M | W

Hard Shell Pants ( M | W )
  Waterproof, breatheable. Full length side zippers preferred because it allows easy removal of pants, 7/8th zippers allowed but is more difficult to remove pants. No short 1/2 length, or short lower leg zippers allowed as it is difficult to put pants on when crampons are already on.
Hard Shell Pants
M | W

Expedition Down Parka  
      Must be fully baffled, have an attached, insulated hood, and go below the waist.
Down Parka

    Down Pants  
      To fit over insulation layers. Outer shell must be windproof/water resistant.
Down Pants

    Down Suit. (Optional)
  This replaces the Expedition Down Parka and Down Pants.
Down Suit


Headlamp (Batteries not Included in Rental)  
      High quality LED headlamp. Bring plenty of spare batteries.

  Wool/Synthetic Ski Hat. Make sure ears are covered.
Wool Hat

  Bandana. To shade the neck. (Optional)

  Balaclavas. (1) Heavy weight, (1) Lightweight. Heavy weight must fit over light weight.

  Face Mask. Optional. Suggested: Neoprene or Windstopper.
Neoprene Facemask

  Baseball Cap or other Sun Hat. One with a good visor to shade the nose and eyes. Synthetic (quick dry)
Baseball Cap

  Buff or NeckGaiter. Can be used to shade your neck. or provide face protection
Neck Gaiter

Glacier glasses (w/ side covers or wrap around).
  100% UV, IR, high quality optical lenses designed for mountain use, must have side covers, leashes, and a nose guard is particularly helpful. No more than 8% light transmission. If you wear contact lenses we recommend packing a spare pair of glasses. If you wear glasses we recommend prescription glacier glasses (gray or amber). Talk to your eye care professional to find out where prescription glacier glasses are available.
Glacier Glasses

  Nose Guard. Optional. Attached to glasses.
Nose Guard

Ski Goggles, 1 pair. Dark 100% UV & IR.
Ski Goggles


  Lightweight Synthetic Liner Gloves
  1 Pair. To wear alone on very sunny days for hand protection or as a layering piece with your Shell mitts.
Liner Gloves

Heavyweight Soft Shell Gloves
  1 pair. Windstopper is helpful
Soft Shell Gloves

Expedition Shell Gloves w/ insulated removable liners.
  1 pair. For use lower on the mountain when expedition mitt is not needed.
Shell Gloves

Expedition Mitts
  1 pair. Should be large enough to fit lightweight Synthetic Liner Glove.

Personal Equipment

    Expedition Backpack
  3,500 - 4,000 cu. in. There are many great packs.
Expedition Backpack

    Trekking Backpack
  2,000 - 2,500 cu. in. (Optional)
Trekking Backpack

Sleeping Bag (rental comes with compression stuff sack)
  (Expedition quality rated to at least -40°F). Goose down preferred over synthetic for bulk & weight. If well-cared-for a down bag will last much longer than a synthetic bag. Your bag needs to be long enough that your feet are not pressing out the foot box which will make you colder. It should be roomy enough for comfortable sleeping but snug enough for efficient heat retention.
-40 Degree Sleeping Bag

Sleeping Bag (rental comes with compression stuff sack)
  (Expedition quality rated to at least -20°F). A second bag for Base Camp. This avoids the carrying of the Expedition Bag up and down the mountain after the higher camps are established.
-40 Degree Sleeping Bag

  Compression Stuff Sacks for reducing volume (3). For sleeping bags and down clothing.
Compression Stuff Sacks

Self-Inflating pad
  Two 3/4 or full length pads. One for use at basecamp and one for camps higher on the moutain. If you are over 6 a long is recommended. Make sure to include a repair kit.
Self Inflating Sleeping Pad

Closed-Cell foam pad
  Full length closed cell is recommended, used while staying at camps higher than bascamp and to be used in combination with your self inflating pad.
Closed Cell Foam Pad

  Cup: 16oz. plastic mug with lid (retains heat well and is spill-resistant in the tent).

  Spoon: Good quality tough plastic (lexan).

  Bowl: 2-cup capacity with lid. We recommend a collapsible or packable bowl to help save space in your backpack.

  SPF 40 or better, 2 small tubes. Note: Sunscreen older than 6 months loses half of its SPF rating, make sure that you have new sunscreen.

  Lipscreen. SPF 30, at least 2 sticks. Make sure your lipscreen is new.

  Water Bottles
  2 to 3 Wide mouth bottles with minimum 1 Litre capacity per bottle. No water bag or bladder systems, they freeze or are hard to fill.
Water Bottles

  Water Bottle parkas (2).
  Fully insulated with zip opening. Neoprene "cozy" style does not provided enough insulation and is not recommended.
Water Bottle Holder

  Pee Bottle (1 Liter).
  Large mouth, clearly marked water bottle. Collapsible 1 liter canteen takes up less volume than a bottle when empty.
Pee Bottle

  Pee Funnel (for women). It is a good idea to practice, practice, practice.
Pee Funnel

  1 Liter Thermos. Needs to be strong. Stainless Steel Vacuum bottle.

  Knife or multi-tool. Medium size. Keep it simple and light, needs a blade and screwdriver.

  Toiletry Bag.
  Include toilet paper, hand sanitizer and small towel (as well as tooth brush, tooth paste etc.)

  Hand warmers and Toe Warmers
  Bring 3 sets of each. Toe Warmers are different that hand warmers. They are formulated to work in a lower oxygen environment, like the inside of a boot, they also burn out more quickly.
Hand and Toe Warmers

  Trash Compactor bags (4).
  To line stuff sacks to keep gear dry & one large enough to line pack. At minimum 3 mil. thick.
Trash Compactor Bags

  Camera gear: Optional. We recommend a small digital camera above BC. Simple and light. For more information, see recommendations on the FAQ page of our website. (


  Travel Clothes. A set of clean clothes is nice to have to change into after the trip.
Travel Clothes

1 Large Duffel Bags w/ travel lock. (Lock not included in rental)
  (9-10,000 cu. in.) Used for transporting gear.

    Base Camp Items.  
  It is good to bring additional items which you have found to be useful on previous expeditions. For example: paperback books, playing cards,MP3 flash player, short-wave radio, game boys, musical instruments, ear plugs, lots of batteries, etc.

First Aid

  Small Personal First-Aid Kit..phpirin, Moleskin, molefoam, waterproof first-aid tape, athletic tape, Band-Aids, personal medications.
Small First Aid Kit

  Climbers should bring Mupirocin (Bactroban) cream, excellent topical antibiotic for scrapes and cuts. Cirprofloxin (Cipro) 500mg tablets for travelers diarrhea and for urinary tract infections. Loperamide (Lomotil) or Immodium for diarrhea. Azithromycin (Z-pak) 250mg tablets for non-gastrointestinal infections. Acetazolamide (Diamox) 125 or 250mg tablets for alltitude sickness. Ibuprofen (Advil, Motrin) 200mg tablets for altitude headaches, sprains, aches, etc. Excedrin for headaches. Acetaminophen (Tylenol) 325mg tablets for stomach sensitivity.
Drug Kit


  Please review your Climb Information Sheet for further information about meals. Food

Climber Information
  Shipping to U.S. Addresses only no P.O. Boxes.
Expedition Start Date

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Please select an inseam size.
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Rental Agreement Terms and Conditions
I promise to return all equipment rented from Alpine Ascents International, Inc. in good condition at the end of my climb/course. I agree and authorize Alpine Ascents International, Inc. to charge my credit card on file for repairs and/or replacements of damaged, lost or stolen gear. And I agree not to hold Alpine Ascents International, Inc. responsible for any injuries incurred through the use of its rental equipment.

Rental Information
Reserve: Please submit one reservation per person per departure. Recommend submitting reservation at least one month in advance to ensure adequate time for processing. Incomplete reservations may cause delay or failure to reserve requested items. Cancellations must be made 3 weeks in advance of departure.

Confirmation: Allow 48-72 hours for rental confirmation via email. Please note confirmations might differ from original reservation, please check your confirmation as that list contains items scheduled to ship. If you have any questions or have not heard back from us within three (3) working days, please email or call (206) 378-1927 and ask for the Gear Department.

Payment: Credit card on file will be used to process rental payment. Charges are processed at time of shipping (two weeks prior to departure date) and will include a $50 Security deposit per item and shipping. Shipping cost is based on size and weight and can only be determined at shipping.

Security Deposit: Fees are fully refundable upon timely return (one week from end of trip date). Fees may be assessed for repair or replacement of damaged item. Please allow up to two weeks for your refunded to be credited. Please note that items not returned within one week after trip end date Alpine Ascents reserves the right to withhold all or part of your Security Deposit.

Shipment: Rental items are scheduled to ship two weeks prior to departure. Once received verify all items are correct and fit appropriately. Please note sizing information provided is used to determine the sizes of items shipped.

You are responsible for rentals once items are shipped and until items are received back at Alpine Ascents. We encourage you to insure your shipment.

By Checking this box, I certify that I agree to all TERMS & CONDITIONS of the agreement.
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