The Portabrace PB-1620ICO Interior Case is designed to replace the foam interior of a Pelican 1620 series case. PB Hard Case models ending with "ICO" are Interior Case Only replacements and is an upgrade from foam interiors. When the foam wears out, use the ICO to improve useability and performance. This upgrade includes pouches, pillows and divider planks that give you greater flexibility in configuring your ever-changing equipment requirements. ICO's can even be used with many competing brands of shipping cases with worn out foam interiors.