The NEMO Tensor Insulated Mummy Sleeping Pad is a short (48″) and lightweight inflatable sleeping pad, only weighing 10.1 ounces (286 grams) on the SectionHiker digital scale (0.6 oz over mfg’s published weight.) Insulated with Primaloft, NEMO rates its comfort zone from 15F to 25F /-9 to -4C.
Why sleep on such a short sleeping pad? Mainly to save weight. Your legs need less insulation from the ground than your torso, so many ultralight backpackers rest their legs on top of other gear like a backpack which provides enough insulation from the ground to keep them warm. NEMO also sells an uninsulated version of this 48″ mummy-sized Tensor pad, which weighs 8.5 ounces (240 grams).
Besides its low weight, the Tensor Insulated Mummy 20S (20 inches wide, size short)reviewed here is a quiet and comfortable sleeping pad. It’s covered with 20D PU Polyester Ripstop that has a soft hand against your skin. It’s lined with Primaloft insulation and has an internal aluminized reflective liner, but does not make the loud crinkly sound you find with other sleeping pads like the Therm-a-Rest NeoAir pads.
When inflated, the Tensor Insulated Mummy 20S is a full 3″ thick, providing lots of cushioning for elbows and knees, with excellent stability. The pad is inflated with a single stick valve and takes between 15-17 breaths to inflate depending on desired firmness.
Deflation is very straightforward. Simply open the valve and roll it up to force the air out. The fabric is pre-scored in thirds, so it’s easy to fold and roll. A small stuff sack is provided.
The Tensor Insulated Mummy 20S is a sweet sleeping pad, super comfortable, ultralight, quiet and compact. It’s a great choice if you want one sleeping pad for use in three season weather, including early spring and late autumn when the ground is still cold. NEMO doesn’t believe in publishing sleeping pad R-Values, but rates the pad the pad suitable for use down to 15-25 degrees, which I can indeed confirm is accurate. The Tensor Insulated is also available in longer and wider sizes if you prefer a larger pad, but still want to enjoy its superior construction.
Disclosure: NEMO provided the author with a sample sleeping pad for this review.
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