With cool weather approaching, an insulating pad under your bedding will make a HUGE difference in how warm, or cold, you feel. Standard air mattresses are cold because they have a large area to dissipate your body heat. To be warm I suggest a self inflating mat. They are foam lined and the good ones have an R value of 4.0 or higher. They roll up quite small if you are patient and usually weigh less than 2 pounds. The amazing thing is they are comfortable to sleep on! Do a search for “Self inflating camping mat” and it should give you several choices. Don’t skimp on sleeping gear in the cold. If you wake up numerous times in the night because you are cold, the next day you will be tired and that is when accidents happen because your reflexes are not what they should be. Ride safe, ride longer.