I have a etrex vista before the GPSMAP 60c , I have it on the handle bar of my bicycle and ride about 25mph when suddenly it fall off and swing by the wrist strap right in to the fork and get wedge between the tire and the steel . it make a bunch of grind noise and stop I pretty quick . needless to say the case be completely destroy , the fabric be tear and the tire melt the plastic in front of the unit 's screen . when I take out the unit there be not even a scratch . this case be little less accessible but in my opinion , completely worth it .