Sleeping Pad Comparison — NEMO Eclipse vs Tensor Extreme

NEMO Eclipse All-Season

Best value & comfort

Thicker, cheaper, and excellent for side sleepers. The better choice for shoulder-season or mild winter use — great if you don't regularly sleep below freezing.

NEMO Tensor Extreme

Best for serious cold

R-8.5 gives you a real safety margin on snow and in sub-freezing temps. The choice for Alaska winter objectives where the Eclipse may leave cold sleepers wanting more.

	Eclipse All-Season	Tensor Extreme Warmer
Warmth
R-Value	6.2	8.5 +2.3
Cold-weather category	3-season plusInto light winter	True cold-weatherSnow, sub-freezing
Real-world caveat	May sleep cold at 30°FThicker pad = more convective loss	Reliable below freezing
Comfort
Thickness	4.0 in Thicker	3.5 in
Baffle style	Vertical (Spaceframe Nova)Cradle effect, raised edges	Apex™ trapezoidal trussDivot shape prevents rolling
Side-sleeper friendly	ExcellentBest-in-class pressure dispersal	Good
Noise	Typical	Very quietNo "potato chip bag" crinkle
Anti-slide	Moderate	ExcellentDivot baffles lock you in
Weight & Packability
Weight (Regular)	~16 oz Lighter	~17 ozLong Wide size
Durability & Materials
Top fabric	40D nylon	20D nylon
Bottom fabric	40D nylon	40D nylon
Estimated lifespan	Not published	350+ nightsReviewer estimate
Top fabric durability note	More robust top40D vs Tensor's 20D top	Thinner top (20D)
Price & Value
Price (Regular)	~$170 Better value	$250+
Value verdict	Best value 3-season+	Premium — justified for cold

R-values per ASTM F3340-18 standard. Eclipse Spaceframe Nova baffle design raises edges for a cradle effect.
Tensor Extreme Apex™ baffles use a trapezoidal truss shape. "Real-world caveat" for Eclipse sourced from REI reviewer reports at 30°F.
Tensor 350+ night estimate from BIKEPACKING.com review. Weight shown for Regular size; Long Wide varies slightly.