TIME DELAY TOE SLEEVE

A downhole tool, such as a toe sleeve 100, has an insert 110 movably disposed in the housing's bore 104 and sealably enclosing a second part of the communication path from a first port 103. A barrier disposed between the first and second parts of the communication path is breachable in response to a level of the applied pressure in the housing's bore. At least one retainer 132 is engaged between the insert 110 and the housing 102 and at least temporarily retains the insert toward a closed position. The at least one retainer 132 is at least partially composed of a dissolvable material and at least partially dissolves in response to the applied pressure communicated through the communication path to the second part. The at least one retainer 132 when at least partially dissolved permits the applied pressure to initiate movement of the insert, such as from a closed position toward an opened position.