Adjusting The Shoulder Straps - Northern Diver ARCTIC SURVIVOR EVO X User Manual

Adjusting the side compression straps.
To ensure the PFD is fitted correctly tighten the compression straps
on each side of the PFD. Starting from the bottom, place your hand
on each of the side webbing straps and simultaneously pull each one
forward to tighten. Repeat this process for all side webbing straps.

Adjusting the shoulder straps.

Next, locate the adjustable webbing straps on both shoulders and
simultaneously pull each one forward to ensure the correct adjustment
and fit. Having followed these steps, the PFD should now fit close to the
body.
PFD Manual | East Quarry Appley Lane North, Appley Bridge, Wigan, WN6 9AE, UK