Four nights hiking the Grand Canyon and four nearly sleepless nights reinflating my pad which suffered FOUR leaks throughout the trip! Thankfully the fourth hole (discovered about 5AM on the last night)was the last since I had already used all three patches at that point. If we hadn't been near the river, I'm not sure how I would have discovered the extremely tiny holes other than to soak the mattress with soap and water (not enough to spare when away from the river). For the first few hours until I woke up finding myself lying on a deflated mattress, the pad was great, it radiates heat well and is comfortable. After that, forget it! Really disappointed!!!