Look no further this is the Best product. Before purchasing this I was not sure, I searched amazon and other sites for best backpack or body strap for mobile, but few reviews for other product on amazon mentioned that their mobile fell, or the plastic quality was bad. I wanted to be sure to buy best holder as I am using expensive iphone 15 pro. Yes, you need two hands to remove it from the holder, but that is why is has strong non-slipping grip but still it is easy to open. Just to give you an idea, I think you even you attach few kilos of weight to mobile it will not slip or jump and run while the phone is attached. It fits the mobile along with the back cover, tried for A22, and iphone 15 pro. Plastic quality is also good. The only thing which I wish was not there was the brown pattern sticker attached to the holder as it does not look good when the phone is not attached. Earlier i thought I may need a additional phone strap with Hook as a backup. I think it will fit all backpacks straps but before purchase do check just to be sure, backpacks with slightly wide straps is not a problem, as you can push strap inside a little more(see photos). You can also use it on the belt, but there i think the side of belt should fit and should be wide and thick enough. Shipment was also fine, it was shipped in an envelop with plastic packing sheet layer inside. You can also track your shipment and check its status. Payment is also secure.