Choking Rescue Device Home CPR First Aid Kit For Adult And Children,Portable Asphyxia Rescue Device First Aid Choking Device Set——Features: 1.100% brand new and super high quality.2. Designed to be easy to use. Quite simply, if you live alone, you can use it on yourself in a choking emergency.3. This kit is suitable for children and adults. The suction duration is minimal, so it is safe and effective.4. The spring-type design can exert the maximum suction force of the device, even if it is used alone, it will not affect the suction force5. Your purchase includes: one check valve, two child mask, two adult mask.Specification:Material:PlasticColor:As the picture showSize:As the picture show(1inch = 2.54cm)Package includes:1*Check valve2*Children's mask2*Adult mask