All these people who are nay saying, in actual fact it does appear to sweat, BUT its not the frame, the partion of air between the armordillo and the frame during riding gets to a different temperature (possibly through friction and such, also when removed from a warmer place the protection is insulation so doesnt cool as fast). Therefore, you get, condensation. Similarly with cars when u get in the windows steam up. It will not do anything to the frame, may rot the material of the protection if its kept in a warm place but its unlikley. Personally I think they look ugly as your trying to protect the frame but surley you protect it so it doesnt have any ugly scratches but if your protecting it you cant see it so it sort of defeats the object in my eyes. Hope this has helped. Adam