The new Therm-A-Rest Prolite S pad placed on top of my old Prolite 3 Short for comparison. Note the more tailored shape of the new model. The 32 ounce Nalgene bottle is in the picture for scale.
The whole idea of an equipment upgrade is to replace something very good with something even better. In this case I am replacing a Therm-A-Rest Prolite 3 Short sleeping pad with one that is lighter, smaller when packed, and provides a little more padding and a higher R value. The new model is called the Prolite S which stands for short or three quarter length.
The old sleeping pad was very good for bivouac and ultra lightweight situations in moderate temperatures. It weighs 14.3 ounces with stuff sack.
The new version Prolite S weighs 11.6 ounces which, to be exact, is 2.7 ounces lighter than the old one. Mo better.
I know a 2.7 ounce decrease in weight is not a big deal in the overall scheme of things but it is an improvement and that is what we are constantly striving for when everything goes on our back. Every little bit helps. Shape, thermal efficiency, and padding enhancements are also welcome changes. That is the kind of progress that justifies the cost of an upgrade.
Am I worried about testing this new pad before putting it into my system? No. It is a Therm-A-Rest and I have been using Therm-A-Rest inflatable ground slash sleeping pads for more than 20 years with outstanding results. In fact, a Therm-A-Rest pad has never failed me. Not a single leak or defect, ever.
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