Mechanical prosthetic foot for multiple activity levels

A prosthetic foot comprising:

• an elongate sole member having a toe end defining a toe end of the prosthetic foot and a heel end defining a heel end of the prosthetic foot;
• a first upper member having a proximal end and a distal end and including a curve between the proximal and distal ends of the first upper member, the proximal end coupled to an adapter and the distal end coupled to the elongate sole member at an attachment location rearward of the toe end of the elongate sole member;
• and
• a second upper member having a proximal end and a distal end and including a curve between the proximal and distal ends of the second upper member, the proximal end of the second upper member coupled to the adapter and the distal end of the second upper member terminating near the attachment location, wherein the second upper member is pre-compressed such that the distal end of the second upper member is biased toward the first upper member or the elongate sole member.