Durable multipurpose heavy-duty crumb bumper plates are built for cross-training/HIIT workouts and Olympic weightlifting. With a smooth, stainless steel center with rounded edges, the weights can easily slide on and off the Olympic bars without damaging the sleeves. Also, the material is much softer and has better cushioning and longer life than others. These bumpers are tough enough to handle the punishment of intense daily use. After completing a lift, you can drop them safely, with no damage to the bar and floor, and quieter and safer overhead or shoulder height drops than old-school iron plates. Good for strength training, weightlifting, crossfire, etc. It is innocuous and eco-friendly and can be an easy-to-use home gym or garage gym, applicable to teenagers and adults.