Looking for a weight lifting belt for Someone who works out 5 days a week, for Back support. I was thinking a nylon one for continuous use throughout many different exercises. Anyone else use anything for their back? This is for a friend. i thought leather was strictly for more squats and deadlifting. Not overall exercising. And leather was more for 1 rep max, stuff. would a 4 inch or 6 inch be better? Cause of the lockdown, all these new exercises are difficult since their back was always supported by a machine. So hopefully this will teach them how to use proper form, and slowly remove the belt to do the exercises without the belt, when their strength increases and the gym opens again. i found a E23 or E26 nylon, velcro slip lock, that looked good. Its 4 inches. anyone have ideas or incite?