Therm-a-Rest Synergy Luxe Mattress Coupler

Adding pictures of the underside of the sheet and the straps and how they work. They are attached to the center. The corners of the sheet are open/hollow. I have not yet tried the product with my sleeping pads to know how it actually functions. When I do, I will report back. I’m hoping it will fit two Exped MegaMats. Here’s the underside of the sheet. Update: yes it does fit two Exped MegaMats even though they are taller than the dimensions of the sleeping pad this sheet was made for. (Two 77.6 x 30.3 x 6 inches)

Have now tested this product multiple times, and it is a great solution for keeping inflatable sleeping pads in place. The setup is straightforward (3-5 min) and keeps the mats very securely in place without a noticeable gap. The fabric is also nice to touch, with the small downside that it is not the lightest for backpacking.

This sheet paired with the Big Agnes Rapid SL double mat was the perfect combination to use with a down quilt. The only small hiccup is the bottom straps are designed to hold the sheet to 2 single mats and are sewn at the center of the sheet. When using a double mat you need to remove the stitching in the center so the straps can wrap the double wide mat. It takes about 30 seconds to do this. The sheet is very soft and even water repellent in case you bring your wet rain jacket into the tent. It conforms well to va…