my first trip using the tpg pants was to moto gp race in indy. the weather was as follows; 90 when we left louisiana, raining when we got to illinois and indiana, raining when we left through indiana and kentucky, and in the upper 50's in kentucky and tennesse. all i had underneath were ld shorts. the vents worked good in hot and my legs were not cold in the morning. it rained all day sunday at the races and on the way home. these pants are waterproof along with the pockets. the only thing the pants lack are a good fastening system for your waist. i like to wear my riding pants high so to resolve this i think next trip i will have suspenders. other than that the pants are awesome.