The Box Strap by Forearm Forklift is the easy way to allow different sized cartons to be carried together.
The 3" wide strap, the widest box strap around, allows for a more stable strap to carry those uneasy boxes.
You can use the Box Strap to carry up to 40lbs, with the strap and fastener tested at 58 lbs.
Great use for movers, carrying firewood, beach items, etc.