This is the Best most simplest nipple corection cups of its kind, Great for correction of flat or inverted nipples many have seen and benefited from our nipple correction cups. Powerful suction with this Angel Kiss set of demurely sized suction cylinders. No pumps or other equipment is required. These self-contained nipple correction cups are made of medical grade plastic and are super silent and work twist. Lubed internally for smooth movement and a strong seal that makes for sublimely powerful suction.
Packing list : 2pc
Condition: 100% brand new and high quality
Color : as picture
Material: TPE
Size : External: 5cm  Dia?4.5cm
Measurements:
Opening is 0.75 inches in diameter, tube is 2.35 long and entire item is 4 inches long.
For better suction use a little lotion on the suction area prior to use. The skin must be smooth and hair free for ultimate suction.
How to Use:
1-Place on the nipple
2- Hold in place with one hand while twisting the knob with the other hand clockwise
3-to Release, hold it with one hand while twisting counter clockwise with the other hand.
If you see cupping with less oil, it is the manufacturer to better test its "TWIST", it can also have lubrication, please don't worry.