Expandable sheath

An expandable sheath comprising:

• an outer member including a lumen extending therethrough, the outer member comprising circumferentially spaced reinforcing members extending longitudinally along a length of the expandable sheath,
• an inner member extending longitudinally within the lumen of the outer member, the inner member defining a central lumen of the expandable sheath and comprising three circumferentially spaced folded portions in a radially unexpanded state, the three circumferentially spaced folded portions extending longitudinally along a length of the expandable sheath, each of the three circumferentially spaced folded portions including a three-layer thickness in a radial direction with an outer-most layer of each of the circumferentially spaced folded portions being freely moveable relative to the outer member along a central portion of the length of the expandable sheath which the three circumferentially spaced folded portions extend,
• wherein the inner member is configured to radially expand by unfolding the three circumferentially spaced folded portions into three circumferentially spaced unfolded portions.