Disclosed herein are various embodiments of a holder (1) for heart valve prostheses (V). Embodiments of the holder (1) include: -a hub portion (2) having a longitudinal axis (X1), -an engagement portion (4) coupled to the hub portion (2) and including plural finger members (5) variably positionable relative to the hub portion (2) between a collapsed condition wherein the finger members (5) are closed onto the hub portion (2) and an expanded condition wherein the finger members (5) radially protrude with respect to the hub portion (2) to engage a heart valve prosthesis (V). The finger members (5) are L-shaped. Also disclosed are a storage arrangement and delivery instrument and a kit for crimping, loading and delivering an expandable heart valve prosthesis (V).