Breathable means that a fabric permits perspiration vapors to escape from the body through the fabric. During strenuous activity, the body releases moisture vapors, and The skin breathes this moisture as it naturally tries to cool itself  down. Breathable  Fabrics transmit body moisture away

from the body, thus maximizing comfort and dryness during outdoor activities.
      Waterproof refers to a fabric's ability to resist penetration of water completely. Waterproof fabrics may be coated with a layer or Resin, or Teflon film, TPU, TPE, or Other coatings. Each square centimeter of resin or film coating has billions of tiny holes. However, the holes are many times smaller than water droplets and thus can prevent penetration of water, even under pressure.

     The so-called breathable waterproof material is in the lining fabric coated with a layer of resin, there are many in the diameter of water molecules and water vapor molecules in diameter between the small hole can emit water vapor and could not thoroughly into the rain, a good solution for the waterproofing and breathability of this conflict.