The 40th Anniversary Edition Pad is No Longer AvailableThe 40th edition is quite similar to the ProLite Plus, about which we did a complete review. The exterior dimensions are the same. The 40th Anniversary Edition differs in these ways:
• It is Yellow print rather than Burnt Orange print
• R-Value is 4.8 rather than 4.6
• It is two ounces heavier
• It is 2 inches thick rather than 1.5
• It is more expensive
• The logo is different
We like the extra thickness, but don't like the boosted price. The Men's version is $20 less expensive and more retailers carry it so you are more likely to find it on sale. At this price range, you are getting close the cost of a NeoAir which is much lighter and will be the better option for backpackers who want the lightest stuff.
To learn how the women's 40th Anniversary Edition compares, check out the Therm-a-Rest ProLite Plus Women's, as well as our Sleeping Pad Review.