Waterbloc Pro -15°

The world's lightest weatherproof down sleeping bag

  • unique seam-welding technology keeps moisture out
  • ergonomic fit provides efficient insulation performance
  • water-repellent, vapor permeable Pertex QuantumPro shell fabric
749.95 USD
Waterbloc Pro -15° S left
Prod. no. 7640171999005
Waterbloc Pro Draft collar

The puffy draft collar prevents heat loss for cozy next to body warmth.

Waterbloc Pro Draft tube

The thick draft tube backing the zipper provides excellent heat retention. The anti-snag stiffener ensures smooth operation of the zipper.

Waterbloc Pro Footbox

Designed to cradle the feet in uncompressed insulation, this unique footbox eliminates cold spots. Internal baffles form a multi-faceted array of down chambers for extremely efficient heat conservation in this critical area.

Glowinthedark zipper puller.jpg

Glow in the dark zipper puller

Product description

The Waterbloc Pro -15° is the lightest, weatherproof down sleeping bag on the market. It 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 small pack size and discreet color also make it the perfect companion for bushcraft use, survival specialists and micro-adventures with a tarp as shelter. This allows nights in the open with out a bivybag.

The Waterbloc Pro features an ergonomic fit for enhanced insulating performance as well as a proportional differential cut. The 3D foot box with 11 individually filled down chambers ensures warm feet. A puffy draft collar retains warmth within the sleeping bag. Only RDS certified down is used in the Waterbloc Pro.
All EXPED refrains from using environmentally damaging hydrophobic down treatments.

All Exped sleeping bags in our Trekking, Basecamp and Expedition series can be paired with each other, with other EXPED models, as well as with most sleeping bags from other brands. Included with the sleepig bag is the waterproof stuffsack and the "Storage Duffel" as a storage bag.

Logo my climate neutral product


Fill weight

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


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

Water resistance



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

Shoulder width

S: 61.8 in
M: 61.8 in
L: 62.6 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

Up to body size

S: 67 in
M: 71 in
L: 77 in

Foot width

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

Color Inside



Shell Fabric

20 D Pertex Quantum Pro ripstop nylon
1'000 mm water column
MVTR 7'000 g/m2
bluesign® certified
PFC free


15 D ripstop nylon
bluesign® certified
PFC free


min. 850 cuin/oz Polish 90/10 (US-Standard) goose down


Climate neutral product

EXPED measures and fully offsets all global warming gases (CO2 equivalents) from manufacturing and shipping this product.

climate protection declaration

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.

more about RDS

Oeko-tex certified material

Oeko-Tex® is a testing and Certification system for raw materials and finished products. EXPED does not feature fully tested products. The listed products aren't certified under this standard. Only accordingly specified materials are certified.


Bluesign certified material

Bluesign®, the world's strictest textile standard for environmental protection and consumer protection in textile production. The listed products aren't certified under this standard. Only accordingly specified materials are certified.


Warranty years

5 Years