I am senior runner doing my first Ultra.The Chilterns 100 hills. I purchased a vest, bottles,waist bag and coat. In severe weather they all worked very well. The main plus was the best made life so so easy when on the actual run. When your tired the bottle position and storage made it easy. The vests storage to put in and take out coat top was easy.Can not over state when your tired it made it easy. The jacket was good and the waist bag had my phone and power pack for Garmin.Would have run out of power at 25 miles. The gear made my life so much easier when tired.