Best Seller. The comfortable form-fitting Infinity Vest adds resistance to your bodyweight training, jogging, jumping or other fitness activities without hindering movement. This weighted workout vest is made of breathable material for comfort and quick release buckles for convenience. Reflective stripes for added safety and a convenient pocket for your phone or music player. One size fits most. Blue (6 lb. or Black 10 lb.) Do not machine wash or soak in water. Weights are not adjustable.