Bomb Fit 9 Bones Hooks Zipper Neoprene Waist Eraser VestDESCRIPTION Description Details 1. Neoprene material, during sports and keeping warm; 2. The elastic band on the chest effectively reduces the shaking of the chest by 78%; 3. 9 steel bones, strong plastic waist and supporting force; 4. The external double waist belt design strengthens the tightening force; 5. Woven cross elastic band design on the back to increase the adjustment space and design sense of the length of the shoulder strap; 6. The small