Trekking belt is a traditional belt for skijoring, running and hiking in the mountains.
It's adjustable from 75cm/29 inch to 125cm/49inch. With good padding around the back for extra comfort.It is very important tht the belt remains on the hips so the belt is fitted with detachable leg straps to prevent the belt from rising onto the lower back.
There are two ways of attaching the running line, if you have a runningline with a loop you can enter the loop through the ring and then over the hook. Or if you have a running line with a hook or quick-release, it can be attached to the ring.
The belt has a little loop on the back where you can attach the baggybag, then you allways have poop bags available on the trip.