Good choice for POV VLOG The phone can be placed horizontally and vertically The design of J hook and long screw can make the phone rotate 90 the size of this strap is easily adjustable fits even the largest winter jackets fits wide body size range Quick connection The smartphone chest strap mount with JHOOK is easy to install and remove your phone which can be removed in just one second It is very convenient Stable structure There are two nonslip rubber pads at the bottom and top of the phone holder When you use the included mini wrench to attach the long screw to the Jhook mount the mobile phone clamp will be in accordance with your adjusted angle stable shooting will not slip Multi PurposeSuitable for mountain biking skiing snowboarding motocross paddle sports cliff diving wakeboarding and other action sports not intended for running or highintensity activities