Sleeping Bags vs. Tent Waterproofing
Comparing 2 standards across 16 specifications. 16 key differences identified.
Sleeping bag temperature ratings are standardized internationally under ISO 23537-1 (which superseded European standard EN 13537). Using a calibrated thermal manikin in a climate chamber, tests establish four standardized temperature metrics: Comfort Temperature (T_comf, where a standard woman sleeps comfortably in a relaxed posture), Limit Temperature (T_lim, where a standard man sleeps in a curled posture without shivering), Extreme Temperature (T_ext, minimum survival threshold for women against hypothermia for 6 hours), and Maximum Temperature (T_max).
Tent fabric waterproofing and water resistance are measured under ISO 811 using the Hydrostatic Head (HH) test, expressed in millimeters of water column (mm HH). A fabric rated at 1,500 mm HH can support a 1.5-metre column of water before leakage occurs. Industry standards classify rainfly fabrics from 1,200–3,000 mm HH (lightweight backpacking silicone/PU nylon) to 5,000–10,000 mm HH for heavy expedition groundsheet tub floors, sealed with hot-applied polyurethane seam tape.
Specification Comparison Table
16 Parameters| Parameter / Spec | ||
|---|---|---|
|
Testing Standard
|
ISO 23537-1 (Supersedes EN 13537) Thermal Manikin Standard | ISO 811 / DIN EN 20811 Hydrostatic Head (HH) Column Test |
|
Comfort Temperature (T_comf)
|
Standard Adult Female (25 yrs, 60 kg, 1.60 m) Relaxed posture without feeling cold | — |
|
Limit Temperature (T_lim)
|
Standard Adult Male (25 yrs, 70 kg, 1.73 m) Curled posture without shivering for 8 hrs | — |
|
Extreme Temperature (T_ext)
|
Hypothermia Survival Threshold for Female 6-hour survival limit without frostbite/death | — |
|
Down Fill Power (FP) Tiers
|
600, 700, 800, 850, 900+ cu in/oz IDFB Loft Volume Standard | — |
|
RDS Down Certification
|
Responsible Down Standard (RDS) or Downpass Ethical Sourcing | — |
|
Synthetic Insulation Types
|
Continuous Filament (Climashield) or Short-Staple (PrimaLoft) Moisture-resistant polyfill | — |
|
Standard Internal Length
|
Regular: 180–185 cm / Long: 195–200 cm Internal Usable Length | — |
|
Legal Waterproof Minimum (US / UK)
|
— | 1,000–1,500 mm HH (resists light showers) |
|
Standard 3-Season Rainfly Rating
|
— | 1,500–3,000 mm HH (resists driving rain and wind) |
|
4-Season / Expedition Rainfly Rating
|
— | 3,000–5,000 mm HH (resists heavy snow loads and torrential storms) |
|
Tent Groundsheet / Floor Rating
|
— | 5,000–10,000 mm HH (resists high body-pressure contact wetness) |
|
Silnylon (Silicone/Nylon) Coating
|
— | Liquid Silicone elastomer impregnated both sides High tear strength / UV resistance |
|
PU (Polyurethane) Coating
|
— | Polyurethane coating applied to underside with heat-welded tape Standard Waterproofing |
|
Fabric Denier (D) Range
|
— | 15D–20D Ultralight, 40D–70D Rugged, 150D Expedition Linear mass density in grams per 9,000 m |
|
DWR Surface Treatment
|
— | C0 Fluorocarbon-Free Durable Water Repellent Surface water beading |