About this item

• PRODUCT DETAILS: The price includes two portable muscle trainer, one white color and one black color, with a size of 4x2 inches. Two sets for easy replacement use.
• COMPACT EXERCISE ASSISTANT: This breathing trainer is used to train our vital capacity. It is very convenient to use and easily combines exercise with daily life. Enable you to engage in efficient breathing training in a short period of time.
• ADJUSTABLE RESISTANCE SETTING: At the bottom of this resistance trainer is a knob that can adjust the extent of resistance. You can easily adjust the amount of exercise you need by twisting the bottom according to your training needs.
• DURABLE & SOFT MATERIAL: Main body of the exercise device is made of soft silicone, which is comfortable and durable. The regulator is made of high-quality ABS material, which is sturdy and easy to operate.
• PORTABLE & VERSATILE: The exercise device is suitable for both indoor and outdoor use. You can use it alone for respiratory strength training. It can also be used during sports such as running, gymnastics, and strength training. Combining oxygen exercise and strength training can achieve better exercise results. PORTABLE & VERSATILE: The exercise device is suitable for both indoor and outdoor use. You can use it alone for respiratory strength training. It can also be used during sports such as running, gymnastics, and strength training. Combining oxygen exercise and strength training can achieve better exercise results.