I know many people have mentioned they use these inserts in their strollers. We have a MBUD and so far both kids seem comfortable without this type of lining for "padding" purposes. However, my two year old's head and back are always pretty sweaty when we remove him from the stroller.
For those of you who have used the sheepskin or lambskin inserts, have you noticed that your child actually does stay quite a bit cooler when you use the lining? I noticed that some come with either a fleece or cotton backing. Do you ever use this side for your child? Any advantage of one or the other?
Thanks!