R-Value (Sleeping Pad)
Overview
R-value is a measure of a sleeping pad’s ability to resist heat transfer and provide insulation from the ground. Higher values indicate greater warmth and suitability for colder conditions.
Key points
- Represents thermal resistance between body and ground.
- Higher values are essential for cold-weather trips.
- Standardized testing allows comparison across brands.
- Works in combination with sleeping quilts or bags.
- Critical for preventing conductive heat loss.
Details
Sleeping pads insulate hikers from the ground, which can draw heat rapidly through conduction. R-values typically range from lightweight summer pads to insulated winter models designed for subfreezing temperatures. Standard testing ensures consistent comparison among products.
Proper R-value selection depends on nighttime lows, elevation, and shelter type. Many hikers combine pads or choose higher R-values when using quilts, as ground insulation becomes especially important in those systems.
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