Weighted bats are heavier (or deliberately lighter) than game weight and used to build strength and bat speed. Overload bats add resistance so the body recruits more muscle through the swing; underload bats remove it so the swing learns to move faster; path trainers place the weight above the hands to teach connection and eliminate casting. Use weighted bats for dry swings, tee work, and soft toss - and focus on form, because a bat that is too heavy forces an unnatural swing. Every type here pairs with the rest of the training bats collection.