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See the 15 tests

1. In the box
2. Thickness
3. Dimensions
4. Air chambers
5. Side rails
6. Bounciness
7. Noise
8. Valves
9. Inflation
10. Deflation & pack away
11. Stuff sack
12. Portability
13. Insulation
14. Tent sizing
15. Materials & air retention
16. Pros, cons, recommendations
17. Bonus – MUST read!

In the Box

I bought my Double V Insulated from Amazon. Here’s what came in the box:

• The Klymit Double V Insulated, inside its stuff sack
• Instructions
• Patch kit

Thickness

• Thickness 2.5in
• Loft Air

Inflated to firm, my body never touched the ground on my back, stomach or side.

But I could always feel the ground when I leaned on an elbow or knee, or just sat down. Sometimes when I tossed and turned, too.

Dimensions

• Length 74.0in
• Width 47.0in

That’s nowhere near a Queen or even a Full, and only slightly wider than two regular sleeping pads side by side.

Not the most spacious, but I found it comfortable enough for the two of us.

Air Chambers

V-shaped baffles run across the whole pad. They give my body a lot of support and contour to it.

If you’re used to flat, cushy self-inflating foam mattresses like I am, the surface takes some getting used to. After a few days it felt decently comfortable.

Side Rails

The side rails won’t stop you rolling off, but the edge support is better than on the higher-profile 2-person air mattresses I own.

Bounciness

The left and right chambers aren’t completely separate, but they still cut enough air movement to keep bouncing minimal when someone shares the pad.

Noise

The surface fabric is a little louder than my other 2-person air and self-inflating mattresses. At least it doesn’t sound like a bag of chips.

Valves

• Valves 2 FlatValvesone at each end of the head
• Inflate valve 1-way, only lets air in
• Deflate valve Simple 2-way opening

Both sit flush with the surface, and both are labelled.

They’re low profile and I love having a separate valve for each job. The flaps feel thick and rugged, and I had no air leaks in the weeks I used it.

Inflation

Pull the flap off the Inflate valve, then push the bottom of the stuff sack onto it. It pops into place, and the sack becomes a pump.

With no airflow at all — inside a tent, say — I stick my whole arm into the sack and move it up and down to even out the wrinkles. That alone fills it.

If there’s wind, just face the opening into it. Then fold the top down 2 or 3 times and press the air in with your free hand.

Conditions	Bags of air	Time
No airflow	13-14	1 min 45 s – 2 min
Moving air or wind	11-12	1 min 30 s

Once no more air goes in, pull the sack off and put the flap back on.

If it ends up too firm, open the Inflate valve again and press the built-in flap gently to let a little air out.

Deflation & Pack Away

Pull the flaps off both valves. Fold the pad in half length-wise twice, then roll it up from the end without the valves, as tightly as you can.

If air stays trapped in the last few rolls, press gently on both valves to clear them.

To pack it away, fold it in half length-wise three times, roll it tight again, then push it to the bottom of the stuff sack and roll the top down.

If air gets stuck as you roll the top down, lift the whole sack off the ground and it escapes through the hole at the bottom.

• Deflating and rolling up 1 min 15 s
• Folding and packing away 3 min 30 s
• Total 4 min 45 s

Stuff Sack

The red stuff sack has a roll-top, so I can compact it down as much as I need to.

It feels like the same material as the pad, the seams look good, and it took a lot of pressure as a pump without complaining.

The buckle at the top doubles as a carry handle.

My one complaint is the opening. It’s small, so if the pad isn’t deflated enough it won’t go back in.

Portability

• Packed size 12.0 x 7.5 x 7.0in
• Total weight 3.6lbs (57.2oz)
  • Pad 53.5oz
  • Stuff sack 3.7oz
• Ease of carry Buckle handle on the stuff sack

Packed up, it’s barely bigger than a 32-ounce Nalgene bottle.

It’s too heavy to count as ultralight, but fine for shorter backpacking trips if you can spare the weight and the space.

Insulation

• R-value 4.4
• Seasons Summer and 3-seasonnot warm enough for winter

I only used it in temperatures of 60 to 80°F and never felt too hot, so I didn’t get to test it in the cold.

The V-shaped baffles also create small pockets for your sleeping bag to fill, which adds a little more insulation.

Tent Sizing

In my Coleman 2-Person Sundome, it doesn’t fill the whole floor, so there’s room for gear at the sides.

It’s low enough that I still had plenty of room to sit up and crouch. I could inflate it inside the tent, or inflate it outside and squeeze it in.

It’s low profile enough to fit any 2-person tent, even one as short as my Quechua 2 Seconds pop-up.

In my Coleman 4-Person Dome I could fit both my Double Vs side by side, with space left over for gear and enough headroom to almost stand up.

Materials & Air Retention

• Material 75D polyestertop and bottom

That’s on the thicker side for a sleeping pad and it feels durable. Top and bottom feel identical in thickness, so I think the whole pad is 75D.

The seams are good quality and air retention is excellent. Two of us (300+ pounds together) slept on it three nights in a row without topping up any air.

I’ve had it a year now with no leaks at all.

Pros, Cons, Recommendations

Now, what are the pros and cons, and would I recommend the Klymit Double V Insulated?

High quality

Everything feels well made, from the pad and its separate valves to the stuff sack, and a year in there are still no leaks.

Easy to inflate

1 min 30 s with wind and under 2 minutes without, and you never need to carry a separate pump.

Portable

At 3.6lbs and 12.0 x 7.5 x 7.0in packed, it’s barely bigger than a 32-ounce Nalgene bottle.

Very versatile

This is the pad’s real strength. You can use it for:

• Camping, backpacking and traveling
• Any 2-person tent, even short ones — it’s too low profile to eat livable space
• Summer and 3-season camping
• Inflating with or without airflow, because the stuff sack doubles as a pump

The stuff sack is a tight squeeze

Squeezing the rolled-up pad back in is a 2-minute mini workout, and before I found Klymit’s own deflation method I couldn’t get the air out of the V-chambers at all. My blue Uninsulated Double V never had this problem.

The surface takes getting used to

The V-shaped chambers aren’t as smooth as a flat self-inflating pad, and it took me a few days to adjust. Plenty of other reviews call it super comfortable, so this one may just be me.

Bonus – MUST Read!

Every figure above is from my own testing — measured by hand, bought with my own money.