Instapak Quick IQHRT00-40#40 Bag 18" x 24" (Pack of 30) Best solution for protecting fragile, high-value items from damage during shipping Conforms to nearly any product shape and size Easy to use, activates with the touch of a hand, anytime, anywhere Expands in seconds to form custom-fit, protective foam cushions Recommended Box Size: 12 inch x 12 inch x 12 inch