When there is a job that needs to be done whatever the weather, it is important to be properly dressed. EN 343 is an European standard for protective clothing. Look for EN 343 certification if you want to be guaranteed comfort even when it is windy and raining. You will find two values beside the symbol for EN 343. The first value indicates waterproofness. The second value describes the breathability of the overall product. Both values are divided into classes from 1-3, with 3 indicating the highest class in both cases.