ZELUS 加重棒球訓練套組 | 3.5–35 盎司訓練球，附縫線與收納袋，適用於打擊與投球訓練

Worked through all six weights in one session and the progression feels perfect, from the light 3.5 oz to that heavy 35 oz beast. The seams are raised enough that I get a real grip even when my hands get sweaty, and the whole set fits neatly in the included bag for the car.

Stitching on the 12 oz ball is deep enough that I get a real grip even with sweaty hands. The carry bag holds all six sizes snugly, so I can take the whole progression to the cage without clutter. My arm feels properly gassed after working up to the 35 oz.

The seams on these balls feel just like a real baseball, so my grip work actually translates to game situations. The 35 oz. one is a beast for building arm strength, and the carry bag makes it easy to haul the whole set to the field.