These jack pads have been specially designed to prevent jacks from sinking into the ground utilizing a larger surface area to spread the weight and add more stability. These pads can be used with stack jacks, trailer tongues, swing arm supports and 5th wheel jacks. The clever design features a useful built-in handle, and there’s a storage strap that makes storage super easy. These camper jack pads have been built to last and have been constructed from durable UV stabilized resin. The combination of the heavy-duty construction and special ribbed design adds extra strength to the product.