KYLINFIT Anti Gravity Inversion Boots Abdominal Crunch Sit Up Bar Hooks Therapy Core Gym Fitness Exerciser

Material: Use heavy metal hook, 2mm high quality steel plate. Can hold up 300bl. Safe and reliable. Built-in 3cm foam lining. Protect your calf from contact with the external steel plate. Also acts as anti-slip.. Benefits: Handstand training stretches your back and stretches your spine. Relieve back pain, muscle spasms. Relieve discomfort caused by spinal compression. Exercise core muscles.. Applicable: U-shaped hook is 2""opening, 1.5""radius (bar size). The 1.5"" bar works best with this product. Too large or too small is a risk of training.. Design: Double safety lock design. Don't worry about the lock popping off while training. Very reliable. At the same time, there is a 2m long safety rope, which can be trained independently to ensure safety.. Note: This product is a fixed size and cannot be adjusted in size. Applicable ankle dimensions: 22-35cm (from the lower end of the soleus muscle to the middle of the ankle segment). Oversize or smallsize will bring you a bad product experience.