Skip to product information
1 of 3

Waterbloc Pro -15 °C/ 5 °F

Waterbloc Pro -15 °C/ 5 °F

Regular price $799.95
Regular price Sale price $799.95
Sale Out of stock
Shipping calculated at checkout.
  • This product is carbon offset with myclimate.

Low stock





Zipper Orientation

Left Zip

Temperature Range

Comfort Temp: 21 °F
Limit Temp: 9 °F
Extreme Temp: -27 °F


S: 43.2 oz
M: 45.2 oz
L: 47.3 oz

Fill Weight

S: 29.3 oz
M: 30 oz
L: 31.4 oz

Inner Girth (Shoulder)

S: 61.8 in
M: 61.8 in
L: 62.6 in

Inner Girth (Foot)

S: 39.4 in
M: 39.4 in
L: 39.4 in

Sleeping Bag Length

S: 74.8 in
M: 80.7 in
L: 86.6 in

Fits up to body size

S: 68 in
M: 72 in
L: 78 in

Packed Dimensions

S: 10.6 x 6.7 x 5.9 in
M: 10.6 x 6.7 x 6.3 in
L: 10.6 x 6.7 x 6.7 in


Sleeping bag, drybag stuff sack, mesh storage bag





20 D ripstop nylon Pertex Quantum Pro, 1000 mm water column, MVTR 7000 g/m²/24h, bluesign™ certified, PFC free


15 D nylon, OEKO-TEX® 100 certified, PFC free, DWR free


850+ cuin/oz European Goose Down (EN 90 / 10), RDS certified, OEKO-TEX® 100 certified, PFC free


EXPED myclimate logo PFC free product label RDS logo

Climate Contribution

EXPED calculates all climate emissions from the production and transportation of this product and finances certified climate protection projects through myclimate to an equal extent.

Learn more at >


Responsible Down Standard (RDS)

RDS is the strictest standard for animal welfare in the production of down. EXPED uses 100% certified down in all down products.

Learn more at >


bluesign® Certified Material

This product uses textiles certified by bluesign®, one of the strictest textile standards for environmental & consumer protection in textile production. See MATERIALS tab for details.

Learn more at >


Recycled Materials

More and more EXPED products are being made from recycled materials such as PET bottles and waste from the production of textiles.



This product is free of per- and poly-fluorinated compounds, a group of non-degradable, man-made chemicals commonly used as dirt and water repellants.


Shipping & Returns

Orders are shipped from our warehouse Monday through Friday (except holidays) within 2 business days. ships to addresses in the United States, APO/FPO and U.S. Territories only. If shipping to a military or U.S. Territory address, please select USPS Priority Mail at checkout. 

Orders shipping via UPS Ground will arrive in 8-10 days, UPS 2-Day in 4-6 days, and UPS Next Day Air in 2-3 days. USPS shipments may take 8-10 days for delivery. These shipping rates include order processing time.

Orders are eligible for return within 60 days.

If you do not receive your package in the above time period, please contact us at with your Order Number. 

View full details

Product Description

The Waterbloc Pro -15° is perfect for use in humid areas at low temperatures in winter.

Thanks to the newly patented STEALTH™ technology, the Waterbloc Pro provides an excellent sleeping experience in all weather conditions. The welded seams keep moisture out.

The Waterbloc Pro features an ergonomic fit for enhanced insulating performance as well as a proportional differential cut. The 3-D foot box with 11 individually filled down chambers ensures warm feet while a puffy draft collar retains warmth within the sleeping bag.

Insulated with RDS certified down and free from environmentally damaging hydrophobic down treatments.

Includes a waterproof stuff sack and mesh storage duffle.

  • Recycled outer shell

    Recycled Pertex Quantum shell fabric is vapor permeable, PFC free & water repellent.

  • RDS-certified down insulation

    RDS-certified goose down with 850+ cuin fill power gives bag excellent, uniform thermal performance.

  • 3-D triangular foot box

    3-D triangular footbox with 11 individual down-filled baffles keep your feet warm.

  • Puffy draft collar

    Puffy draft collar prevents heat loss.

  • Welded seams

    Unique seam-welding technology keeps moisture out.

  • Thick draft tube

    Thick draft tube backing the YKK zipper provides excellent heat retention & prevents snagging.

1 of 6


How do I wash my sleeping bag?

For most sleeping bag cleaning, we recommend spot-cleaning with a damp sponge.

If the bag needs a deeper cleaning, use a front-loading machine with no agitator and follow the directions below based on the type of sleeping bag you have: 

  • For the EXPED MegaSleep and other synthetic-insulated sleeping bags, start by zipping the bag fully closed. Use a gentle or mild detergent. Select cold water and the delicate cycle on a front-loading machine. Do a second rinse cycle once the wash is complete. This will ensure all detergent is removed. Next, we recommend two spin cycles, which will remove excess moisture. Dry in a dryer with low or no heat or hang dry synthetic sleeping bags over. Be sure to support the sleeping bag over several lines or rungs of a drying rack to reduce stress on any one section of the bag. 
  • For down-insulated sleeping bags, start by zipping the bag fully closed. Use down wash as a detergent. Select cold water and the delicate cycle on a front-loading machine and do a second rinse cycle once the wash is complete. This will ensure all detergent is removed. Next, we recommend two spin cycles, which will remove excess moisture. Dry in a dryer on the medium heat setting. Include two or three clean tennis balls in the dryer to fluff the down and restore full loft.

Do you use any harmful chemicals on sleeping bags?

All fabrics used in our sleeping bags are OEKO-TEX 100 certified. This means they are free of any flame retardants and PFCs (perfluorochemicals).

Please visit the individual product page for details and specifications.

How should I store my sleeping bag when not in use?

When not in use, we recommend storing your sleeping bag in a large mesh storage sack. This ensures the bag's insulation retains the maximum loft and warmth in use. When traveling it is okay to compress the bag and keep it stored in a waterproof dry bag. 

If the down is compressed or lacks loft after a long trip, put the sleeping bag in a dryer on a no-heat setting with two or three clean tennis balls. If the down does not regain its loft, it may need to be washed according to the instructions.

When you return from a trip it is very important to dry your sleeping bag completely. Unzip the bag, spread it over a couch or several chairs and make sure it’s dry before storing it in the mesh storage bag.

It’s best to store sleeping bags in a dry, temperature-controlled room, away from pets.

What are EN temperature ratings for sleeping bags?

The EN (European Norm) rating is a strict test designed to provide objective measurements and standardize how sleeping bags with hoods are compared and marketed across brands. It is intended to help customers make informed choices using independently derived temperature ratings.

Each EN sleeping bag test produces four temperature ratings - Upper Limit, Comfort, Lower Limit and an Extreme rating, with the following definitions:

  • Upper limit - the temperature at which a normal man* can sleep without excessive perspiration. It is made with the hood and zips open and with the arms outside the bag.
  • Comfort - the temperature at which a normal woman* can expect to sleep comfortably in a relaxed position.
  • Lower limit - the temperature at which a normal man can sleep in a curled position for eight hours without waking up.
  • Extreme - the minimum temperature at which a normal woman can stay for six hours without risk of death from hypothermia (although frostbite is still possible).

*For the EN rating, it is assumed that a “normal man” is 25 years old, 1.73 m tall and weighs 73 kg; a “normal woman” is 25 years old, 1.60 m tall and weighs 60 kg.

EXPED uses three of these ratings in the technical specifications of each bag: Comfort, Lower Limit and Extreme and sleeping bag names include the Comfort rating. It’s important to keep in mind that the temperature rating tests assume that the person sleeping is wearing thermal layers and sleeping on a mat with an R-value of 5.4. 

EN ratings are derived from controlled, scientifically repeatable tests and allow sleeping bags to be compared across brands. The humans who use these sleeping bags cannot be so precisely measured, however. Many variables affect how warm a person will be inside a sleeping bag. Level of fitness, quality of recent sleep, level of hydration, level of exhaustion from the day’s efforts, food recently eaten, personal reactions to altitude, mental state and other difficult-to-quantify factors can have a significant effect.

Additionally, most people can identify themselves as either a “warm sleeper” or a “cold sleeper.” For cold sleepers, EXPED recommends choosing a sleeping bag one temperature rating warmer than EN tests would suggest. Also, because most of the heat lost in a night’s sleep goes into the ground, a properly insulated sleeping mat for the conditions is critically important.

Luckily, EXPED is world famous for making warm and comfortable sleeping mats! 

How do I choose the correct size sleeping bag for my height and build?

It’s best to choose a sleeping bag that is close to your body size. Because your body heats up the space in the sleeping bag, if the empty space in the sleeping bag is much larger than your body, it will take more body heat and more time to heat the space. If you prefer a roomier sleeping bag, you may want to size up, but keep in mind you may not heat the space as efficiently.

In-House Gear Repair Services

Our goal is to keep gear out of the landfill by doing repairs whenever possible. Learn more about how to submit a warranty or repair claim.

Learn More