A surgical access device (100) comprises an elongate surgical access member (102) having a lumen extending through it that is configured to receive a surgical tool, and a flexible sleeve (114) member having a lumen extending through it that is configured to receive the elongate surgical access member (102). A substantially rigid collar member (120) is disposed adjacent to a proximal end of the flexible sleeve (114) and has a lumen extending through it that is configured to receive the elongate surgical access member (102). The collar member (120) can be moved relative to the elongate surgical access member (102) to selectively configure the flexible sleeve (114) in a relaxed condition in which the flexible sleeve (114) has a relatively smooth outer surface and a compressed condition in which the flexible sleeve (114) has a plurality of protrusions formed on the outer surface that are configured to create a seal between the outer surface and tissue. The flexible sleeve (114) is normally in the relaxed condition and is configured to receive a compressive force to be configured in the compressed condition.
