This is a simple pad we bought to place under our sleeping bags for more comfort while camping. This pad is amazing! The difference between just using the sleeping bag and then using the sleeping bag with this extra padding is night and day. If I don't use a pad I spend the whole day with miserable back pain. The added padding alleviates my back pain completely. It just makes camping a more enjoyable experience because the ground is just hard to sleep on with no additional padding. It can also be used and fits perfectly on top of a cot (it has straps to attach it to the cot), but we just used them with sleeping bags and they were great!