MP Global Pie and Cake Shipper TKPie-13x13x8-pre Shipper with Heavy Duty Shipping Box and 1 1/2-Inch Premium Cushioning Insulation, 13-Inch X 13-Inch X 8-Inch, 6-Pack Ultra-Insulating 1.5" thick cushioning recycled cotton textile fibers are encapsulated between layers Sustainable environmentally preferable biodegradable cotton enhanced insulating fibers contains no foam products or other harmful contaminants Shipped and stored flat offering considerable savings on inbound freight and requires less warehouse space Flexible and pliable soft insulation eliminates shrink and damage with no cracked, chipped or broken coolers User-friendly, quick assembly