The picture is the actual inflatable size measured by the factory. Please see the order cleayWe measured with the largest range edge by handit will have a bit difference.Just for your reference.All batches are the same products.Hope won't have doubt of this problem.Thank you.How to inflat the mat: 1) Open the valve at the end of the mat 2) Leave it for 3-5 minutes (It will take hours to inflate totally for the first use) 3) Wait until the mat be fully inflated 4) Close the valve at the end of the mat 5) Open gas tap on the pillowblow to your desire thickness while pinching the bottom of gas tap into an eclipse shape 6) Close the tap on the pillow How to deflate the mat: 1) Open gas tap on the pillowexpel the air while pinching the bottom of gas tap into an eclipse shape 2) Close the tap on the pillow 3) Open the valve at the end of the mat 4) Roll the mat from one end to the other end queeze out air close the valve(repeat above steps it will be smaller) 5) Clip on the strip Matters Needing Attention *As the sleeping pad is folded in compressive package the sponge needs a few hours to recover its shape for the first use and you need to spread the pad unscrew the valve and screw it up until the pad inflates totally. Fold the pad repeatedly then unsc Origin:CN(Origin) Material:Flocking Cloth SIZE:After filling 188 * 130 * 5 cm