Does anyone have any recommendations for a summer bottom or lack thereof? How feasible is it to travel without a pad during summer months (im thinking like 55-70º sleeping)? i have a ridgerest and an ozark trail walmart thing. The problem is even last night, temps at about 45, i woke up with a reallllly sweaty back. during the summer when its more humid and warm, i know this will be more of a problem. Currently have a JRB 25-30º top quilt as well, any top insulation recommendations are welcome as well.