Material: Cuppings are made of plastic material, non-toxic, safe to use, smooth cup edge comfortable. Easy To Use – Simply twist the top and place over the nipple prior to breastfeeding, just aim at the nipple and reverse rotation, and effect can be seen clearly. Secure seal stays in place. Use the vacuum cups cover small, flat or inverted nipples with nipple suckers, the nipples are drawn out by the pressure, and are molded into a suitable shape for flat and inverted nipples, which help baby can easily latch and continue breastfeeding. The vacuum cups can use for face, neck, arm, leg and body. Safe and secure, greatly facilitate the people to use, can be used at home. Package including 4pcs suction cups. ASIN B0D6RBF8K6 Manufacturer Jesakmie Item model number NS61106 Package Dimensions 5.43 x 5.35 x 1.34 inches; 3.53 ounces