A prosthetic foot device (10) having a toe region (11), an ankle region (12) and a heel region (13), said device comprising —an attachment unit (14) configured to be connected to a coupling device and/or to stump of an amputee —a resilient upper forefoot member (16) extending from the attachment unit (14) through the ankle region (12) towards the toe region (11), said forefoot member (16) comprising at least one elongated curvilinear forefoot leaf spring (17) and at least one longitudinally extending parting slot (20) dividing the toe region (11) in at least two parts: —a resilient heel member (22) extending from the attachment unit (14) through the ankle region (12) towards the heel region (13), said heel member (22) comprising at least one elongated curvilinear heel leaf spring (23) —a resilient lower foot member (25) attached to the forefoot member (16) at said toe region (11) and to said heel member (22) in the heel region (13), wherein said lower foot member (25) is laterally unitary along the longitudinal length thereof.
