mike frankswrote a review of Exped Synmat Hyperlite Sleeping Pad on January 22, 2017
Eventually, your internal baffles will fail on this product. Many other people have also posted about how the product will fail. No abuse nor overinflating was ever done to my pad. I treat my gear with kids glove. I only air-up m pads in my tent. I use the snozzle bag to inflate my pad so no moisture is getting into it from my mouth. Send it back to Exped for them to replace. After I get my new pad back, I will be looking for a more reliable pad. This pad will be used if someone wants to go with me.