The Pelican Replacement 4-Piece Foam Set for the 1605Air Case is specifically designed as a replacement foam set for the Pelican 1605 case. This set includes four foam pieces that are essential for protecting your valuables. The upper section is made of "egg crate" foam, providing a cushioned surface to prevent any damage during transportation. Additionally, there are two Pick 'N' Pluck foam sections that allow you to customize the foam to fit your specific needs. Lastly, the set includes a 1.0" blank bottom foam section, providing an extra layer of protection. With this foam set, you can ensure that your Pelican 1605 case is equipped with the necessary foam to securely hold and safeguard your belongings.