说明

• Feature: Breathing exercise package to challenge yourself for larger exercise and upgrade overall persistence Vital potential - it supports to develop and improve vital potential without the danger of getting to do many of cardio activity and burning energy The portable device - Adventure lung respiration training tool is terribly compact Easy to carry The adjustable resistance dial makes the simplest assignment more difficult, and may exercise more intensely in line with your needs Specification: Material: silicone

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审核