5 things you should know about the essential jacket isadore love feature packed yet simple things here are other 5 things you should know about this garment 1 durable designed to be extremely durable this is the jacket that yoursquoll enjoy for several seasons to come 2 breathable breathable membrane prevents overheating during intense training and tough climbs 3 windproof amp water resistant unpredictable weather is not a problem anymore this jacket is windproof and water resistant