Adjustable Lung Exerciser for Capacity & Strength

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SPECIFICATIONSBrand Name: NoEnName_NullChoice: yesHign-concerned Chemical: NoneOrigin: Mainland ChinaTraining Site: otherType of sports: Cadio Trainingsemi_Choice: yesFeature:Breat hing exercise equipment to challenge yourself for better exercise and improve overall endurance.Vital capacity - it helps to expand and improve vital capacity without the risk of having to do a lot of aerobic exercise and burning calories.The portable device - Adventure lung breathing training instrument is very compact. Easy to carry.The adjustable resistance dial makes the simplest task more difficult, and can exercise more intensely according to your needs.Specification:Material: siliconePackaging list: 1 piece Show more