I claim the ornamental design for an opening for a pouch with attachable flap, as shown and described.
FIG. 1 is an isometric view of a first design of the opening for a pouch with attachable flap (insertable through an unclaimed teether) showing my new design in a closed position.
FIG. 2 is a front view of the first design of the opening for a pouch with attachable flap in the closed position.
FIG. 3 is a back view of the first design of the opening for a pouch with attachable flap in the closed position.
FIG. 4 is a top plan view of the first design of the opening for a pouch with attachable flap in the closed position.
FIG. 5 is a bottom plan view of the first design of the opening for a pouch with attachable flap in the closed position.
FIG. 6 is a first side view of the first design of the opening for a pouch with attachable flap in the closed position, a second side view being a mirror image of the first side view; and,
FIG. 7 is an isometric view of the first design of the opening for a pouch with attachable flap in an open position with the attachment flap shown as inserted through the unclaimed teether.
The broken line depiction of the attachment mechanisms, parts of the pouches, and teethers form no part of the claimed design.