The ornamental design for an exercisespring with loops, as shown and described.
FIG. 1 is a top plan view showing my new design for an exercise spring with loops wherein the opposite side view thereof is a mirror image;
FIG. 2 is a first side elevation view thereof, wherein the opposite side thereof is a mirror image;
FIG. 3 is a second side elevation view thereof, depicting the claimed design in an open position wherein the opposite side thereof is a mirror image;
FIG. 4 is a third side elevation view thereof, depicting the claimed design in an alternate open position wherein the opposite side thereof is a mirror image;
FIG. 5 is a first perspective view thereof; and,
FIG. 6 is a second perspective view thereof, depicting the claimed design in an alternate position.
Dashed or broken line showing forms no part of the claimed design. Analogous areas on both inner and outer surfaces of the strap loops encompassed by or between dash-dot-dash boundary line represent unclaimed matter.