Feature: 1. Reduce back pain and muscle tension; compress intervertebral discs and stretch muscles separately; exercise abdominal muscles for more effective exercise. 2. Comfortable cushioning sides fit your ankle contour; sturdy hooks are fixed to the crossbar and secure the cushions. 3. Equipped with high-strength stainless steel hooks and safety locking clips to ensure that the hook of the boot is firmly fixed on the pole. 4. This anti-start device has been connected to most drawbars. It can be hung on the ankle to stretch gravity and relax the entire body. 5. Hanging in this way can make your weight pull the spine and decompress joints and intervertebral discs. Specification: Condition: 100% Brand New Item Type: Hanging Boots Color: Shown as Picture Material: Aluminum Alloy + EVA Size: Single About 22 x 21 x 13cm/8.7 x 8.3 x 5.1in Application: The product is suitable for people under 120kg Instructions: Put upside down shoes on both ankles, head down, and then hang upside down to stretch your back muscles.. Package List: 2 x Hanging Boots Note: Hanging upside down every day is based on an hour, 30 minutes each morning and evening.Don't hang upside down when you are too full, don't hang upside down on an empty stomach.Before hanging, you need to do a warm‑up exercise for 5 minutes to promote blood circulation. For example: skipping rope, pressing legs, running in place, wait for blood to circulate and then hang.Women should not hang during the menstrual period.At the beginning, I couldn't hold it for as long as 30 minutes, so it was carried out in batches on a 10‑minute basis each time, with a 5‑minute break in between, and slowly it took a long time at a time.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.