Features: 1. The anti-snoring devices has a unique design that prevents snoring.it maximizes airflow in the nasal cavity. Let people around you make a sweet dream. 2. The snoring relief helps reducing snoring,nasal congestion,heavy breathing and other breathe risks,enjoy good sleep every night. 3. We provide 4 sizes 2 different style reusable vents to suit any size nostril/nasal passage. Specifications: Material: Silicone Size: As Picture Shows Package Included: 8Pcs/Set Nose Vents Clip Note: 1.Duetodifferentpersonalmeasurementmethods,therewillbeanerrorof1-3cm,pleaseunderstand (1inch=2.54cm) 2.Besidesdifferentcomputersdisplaycoloursdifferently,thecolouroftheactualitemmayvaryslightlyfromthebelowimages,thanksforyourunderstanding. Thanksforyoursupport:)