NEMO Switchback Review

Overview

The Switchback is NEMO’s take on the accordion-fold foam pad. It has hexagonal, dual-density nodes and a metallized film layer that reflects body heat back at the sleeper. It’s built for thru-hikers and weight-conscious three-season campers who want a pad with no valve, no patch kit and no way to fail at 2 a.m. The trade-off is the one every foam pad carries: it rides on the outside of the pack, and it sleeps firmer than any inflatable.

Key Specs

Spec	Detail
Type	Closed-cell foam, accordion fold
Weight	300–415 g depending on size
Dimensions (Regular)	72 x 20 in / 183 x 51 cm
Dimensions (Short)	51 x 20 in / 130 x 51 cm
Thickness	0.9 in / 2.3 cm
R-value	2.0
Packed size (Regular)	20 x 5 x 5.5 in / 51 x 13 x 14 cm
Packed size (Short)	20 x 5 x 4 in / 51 x 13 x 10.75 cm
Materials	Dual-density Axiotomic PE foam, metallized thermal reflective film
Stated temperature range	20–35°F / -7 to 2°C
Warranty	NEMO Lifetime Warranty

Performance

Weight and packing. NEMO lists the Regular at 14.5 oz (415 g). Outdoor Gear Lab’s testers put it on a scale at 411 g, a hair above the 405 g they measured for the Therm-a-Rest Z Lite Sol, and they scored the two nearly level on weight. The hexagonal pattern nests tighter than the Z Lite’s egg-crate profile, which is how NEMO gets a smaller packed size. Even so, a full-length foam pad is a big object. Most hikers strap it to the outside of the pack, where it has to be shifted to reach the gear inside and can catch on brush.

Warmth. An R-value of 2 is about the ceiling for a single sheet of closed-cell foam. NEMO rates the pad for 20 to 35°F and calls it a three-season pad. The taller nodes leave more room for a bag or quilt to loft underneath the sleeper, which NEMO says adds up to 15 percent more warmth. The metallized film contributes some radiant reflection. Below freezing, the pad’s second job takes over. NEMO pitches it as a layer to stack under or over an inflatable, and the foam gives a leaking or underperforming air pad a backup.

Comfort. This is where the Switchback has to earn its keep. The extra height over a Z Lite is noticeable but modest, and Outdoor Gear Lab scored its comfort 4.0 out of 10, only half a point above the Z Lite Sol’s 3.5. Back and stomach sleepers generally get along with it. Side sleepers are less well served. Halfway Anywhere found that the added thickness still doesn’t relieve hip and shoulder pressure, and side-sleeper discomfort is the most common complaint among owners. Hikers coming from inflatables should expect a firmer, flatter night. As with all foam, the nodes compress with use, and Halfway Anywhere reports the pad flattening over repeated nights.

Durability and ease of use. There’s nothing to inflate, patch or puncture. The pad unfolds in seconds and packs just as fast. Thru-hikers on r/Ultralight regularly name this absence of failure modes as the reason foam outlasts inflatables on rough ground. It also doubles as a sit pad at breaks and a camp mat at night.

Cutting it down. The accordion panels invite a knife. Outdoor Gear Lab notes that each segment weighs about an ounce and that a torso-length pad comes in around 7 oz. One r/Ultralight hiker carried six panels on the John Muir Trail in July at roughly 167 g and called it warmer and lighter than a thin inflatable, with no inflation time and no repair kit.

Choosing a Version

The versions differ in length only. Width (20 in), thickness (0.9 in) and R-value (2) are identical across the lineup.

• Short, 300 g: At 51 in, it runs from shoulders to hips. Hikers who rest their legs on a pack, shoes or a backpack liner save 115 g over the Regular, and its 4 in packed height makes it the easier one to stash. Anyone sleeping on cold ground should expect chilly feet and calves.
• Regular, 415 g (manufacturer weight): At 72 in, it reaches from head to heels. This is the one for sleepers who want a single pad with nothing else under them, and for winter use under an inflatable. It’s also the better starting point for cutting down to a custom torso pad, since the extra panels trim off easily.
• Regular, 411 g (measured): This is the same Regular pad. Outdoor Gear Lab’s scale read 411 g, 4 g under NEMO’s stated figure, which is well within normal manufacturing variation. Buyers can plan around about 415 g either way.

There is no long or wide version, so tall or broad sleepers will find the Regular snug.

Pros & Cons

Pros

• Can’t leak, puncture or fail mid-trip
• R-value of 2 is as warm as single-layer foam gets
• Thicker than a Z Lite, with a smaller packed footprint
• Unfolds and packs in seconds
• Panels cut down easily to a torso pad of roughly 170 g
• Short and Regular cover torso-only and full-length sleepers
• Lifetime warranty

Cons

• Slightly heavier than the Z Lite Sol on the scale
• Bulky on the outside of the pack and prone to snagging
• Still a firm bed, and a poor one for side sleepers
• Nodes flatten with extended use
• No long or wide size

Who Should Buy This

The Switchback suits thru-hikers and three-season backpackers who value reliability over softness, back and stomach sleepers who can live with a firm pad, and anyone who wants foam to cut down, layer over an air pad or sit on at breaks. Side sleepers should look at an insulated inflatable instead. So should cold sleepers who need a stand-alone pad below freezing and hikers who won’t carry anything outside the pack.

Verdict

The Switchback is a well-executed foam pad. It edges out the Z Lite on thickness and packed size at almost no cost in weight, and its panels cut down neatly for the gram-counting crowd. It earns a spot for hikers who want a bombproof pad or a winter backup, but anyone who counts on a soft night’s sleep should buy an inflatable.