How to Shorten Your Massdrop x Klymit Sleeping Pad
It is fairly easy to cut a sleeping pad to your desired length. Shortening your pad gives you a lighter, more packable item that will be faster to inflate and take up less space in your shelter (especially useful in tents that taper towards the foot area). I know a substantial number of members are going to do this to their Long Massdrop x Klymit Utralight V, so they can have a wide short pad.
Here are the super simple instructions for shortening your sleeping pad
1) Decide and mark the desired length of pad
2) Cut with scissors
3) Clear insulation inside away from the edge
4) Seal the edge with a hot iron
I've checked with the experts and as far as I could find, this method works with all sleeping pads - Thermarest, Exped, Nemo, Big Agnes, Sea to Summit and so on. Warning: cutting down your pad most likely voids your warranty from any manufacturer.
Now with greater details and a few basic photos, here is how you can cut down your insulated sleeping pad.
Measure the sleeping pad while it is inflated to determine where you want to cut it. Mark it with tape or a marker. If in doubt, don't cut off as much as you think you want - you can always come back and cut it a second time, but you can't make it longer once it's cut short. Conveniently, the baffles on the Regular Klymit pad are 4" (10 cm) apart, so this makes for easy, natural intervals.
2) CUT. IT. OUT.
Clean the cutting area and cut with decent scissors. For the Klymit pads with V chambers, I prefer to cut along the existing baffles for aesthetics as well as ease of removing the insulation. This makes step 3 easier.
3) REMOVE INSULATION
Clear the inside insulation away from the edge of the pad. I think 1/2" (1.3cm) will suffice. I was able to pull it clear using my fingers, but tweezers or needle nose pliers would probably help. An exacto hobby knife could be used to cut near the seams, but I'd be concerned about cutting through the fabric as well. Clean any dirt away from the cut edge before you seal it.
4) SEAL THE EDGE
Set the iron on its hottest setting and press firmly and slowly along the edge to seal it. I did this a couple of times on each edge, just to make sure, but theoretically one time should be enough. Let it cool, blow it up, and test for leaks. That's it.
By cutting off the corners and one baffle, I was able to knock down the weight of my pad to 14.0 oz (398 g) for a length of 68" (173 cm). Each additional V chamber removed should reduce the weight by about 0.8 oz (23 g) and length by 4" (10 cm) more. This is for the original Massdrop x Klymit Static V Ultralight, which normally is about 0.5 oz (14 g) lighter than the just released Massdrop x Klymit Ultralight V pad (due to the addition of the flat valves and non-slip treatment).
Again, cutting down your pad likely voids your warranty. To some in the Ultralight Community, the tradeoff is worth it. I am not advocating that you cut your pad. That being said, I personally felt a lot more comfortable cutting my $60 Klymit pad rather than my $160 NeoAir.
Note that if you have an uninsulated pad, you can skip Step 3. John Abela illustrates this in his quick video below. He chose to cut straight across the pad, which is another option and slightly easier to do on pads without insulation to remove.
Have you tried shortening your pad? Share you pictures and results below! As always, I welcome your questions.