SKLZ Speed Sac, Variable-Weight Resistance Sled Trainer, Strength Training Equipment, Adjustable Leash & Waist Belt, Black, 4.54-13.6kg

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Product description

  • Variable weight resistance trainer helps sprinters, football players, and other athletes strengthen lower-body to improve speed and explosiveness
  • Three removable weight bags can each be filled with up to 10-pounds of sand to adjust towing resistance for variable weight training
  • 360-Degree belt ring allows for multi-directional training to improve strength and mobility in any direction; adjustable leash fits any sized athlete
  • Includes speed sac shell, 3 Sand bags (sand not included), Adjustable leash and waist belt; limited 1-Year manufacturer s

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