A replacement heart valve prosthesis (100; 200), the prosthesis comprising: an expandable frame (120; 220) comprising a proximal end and a distal end and a longitudinal axis extending therethrough, the frame (120; 220) configured to radially expand and contract for deployment within a native heart valve; and a valve body (140; 240) positioned within an interior of the expandable frame (120; 220), wherein the valve body (140; 240) comprises: a plurality of leaflets (142; 242) each having an arcuate proximal edge and a free distal edge, the plurality of leaflets (142; 242) being joined at commissures, the plurality of leaflets (142; 242) configured to allow flow in a proximal-to-distal direction and prevent flow in a distal-to-proximal direction; and one or more intermediate components (144; 250a, 250b) connecting the leaflets (142; 242) to the expandable frame (120; 220), wherein the arcuate proximal edge of each leaflet (142; 242) and the commissures are indirectly coupled to the expandable frame (120; 220) via the one or more intermediate components (144; 250a, 250b) such that when the frame (120; 220) is in an expanded configuration, the one or more intermediate components(144; 250a, 250b) position the arcuate proximal edge of each leaflet (142; 242) and the commissures radially inward from an inner surface of the frame (120; 220), wherein the one or more intermediate components (144, 250a, 250b) are positioned between the entirety of the leaflets (142; 242) and the frame (120; 220), and wherein the entirety of the portion of the leaflets (142; 242) at the commissures and the arcuate edge of the leaflets (142; 242) are not directly coupled to the frame (120; 220) and float within the frame (120; 220). an expandable frame (120; 220) comprising a proximal end and a distal end and a longitudinal axis extending therethrough, the frame (120; 220) configured to radially expand and contract for deployment within a native heart valve; and a valve body (140; 240) positioned within an interior of the expandable frame (120; 220), wherein the valve body (140; 240) comprises: a plurality of leaflets (142; 242) each having an arcuate proximal edge and a free distal edge, the plurality of leaflets (142; 242) being joined at commissures, the plurality of leaflets (142; 242) configured to allow flow in a proximal-to-distal direction and prevent flow in a distal-to-proximal direction; and one or more intermediate components (144; 250a, 250b) connecting the leaflets (142; 242) to the expandable frame (120; 220), wherein the arcuate proximal edge of each leaflet (142; 242) and the commissures are indirectly coupled to the expandable frame (120; 220) via the one or more intermediate components (144; 250a, 250b) such that when the frame (120; 220) is in an expanded configuration, the one or more intermediate components(144; 250a, 250b) position the arcuate proximal edge of each leaflet (142; 242) and the commissures radially inward from an inner surface of the frame (120; 220), wherein the one or more intermediate components (144, 250a, 250b) are positioned between the entirety of the leaflets (142; 242) and the frame (120; 220), and wherein the entirety of the portion of the leaflets (142; 242) at the commissures and the arcuate edge of the leaflets (142; 242) are not directly coupled to the frame (120; 220) and float within the frame (120; 220). a plurality of leaflets (142; 242) each having an arcuate proximal edge and a free distal edge, the plurality of leaflets (142; 242) being joined at commissures, the plurality of leaflets (142; 242) configured to allow flow in a proximal-to-distal direction and prevent flow in a distal-to-proximal direction; and one or more intermediate components (144; 250a, 250b) connecting the leaflets (142; 242) to the expandable frame (120; 220), wherein the arcuate proximal edge of each leaflet (142; 242) and the commissures are indirectly coupled to the expandable frame (120; 220) via the one or more intermediate components (144; 250a, 250b) such that when the frame (120; 220) is in an expanded configuration, the one or more intermediate components(144; 250a, 250b) position the arcuate proximal edge of each leaflet (142; 242) and the commissures radially inward from an inner surface of the frame (120; 220), wherein the one or more intermediate components (144, 250a, 250b) are positioned between the entirety of the leaflets (142; 242) and the frame (120; 220), and wherein the entirety of the portion of the leaflets (142; 242) at the commissures and the arcuate edge of the leaflets (142; 242) are not directly coupled to the frame (120; 220) and float within the frame (120; 220).