Roll of adhesive tape. 
 
Measurements: 10cm x 5m.
 
Application:
Cut a strip of tape to the size you prefer.
Round off the edges.
Apply a plaster/gauze to the nipples.
Proceed by following the illustrated instructions.
 
It is advisable to remove the tape using body oil.
It can be worn for 4-5 days before needing to be reapplied.
 
It is possible that blisters and redness may arise, depending on the specific sensitivity of your skin.