The SKLZ Pro Training Utility Weights feature a set of 2 convenient 4 lb. rubber weights that firmly secure onto the Pro Training Agility Poles and Goals. These training weights can add stability to the Quickster Soccer Trainer and the Quickster Soccer Goals for better balance on all surfaces, providing the support you need to build better players. They also fit easily on our Pro Training Goals if you need the additional stability. Whether on grass, turf, courts, or wherever you play, these durable rubber weights offer added balance, so there’s no limit to how hard your team can train.