Get explosive leg drive and stride frequency with the SKLZ® SpeedSac, a weighted training sled designed for hard-core athletes. The variable weight ranges safely strengthen lower body-muscle groups by providing options for increased resistance training; athletes can remove the bags and use their handles to execute lunge walks for additional hamstring and quadriceps strengthening.
- Improve 40-yard dash times, overall speed and explosiveness
- Strengthen lower-body muscle groups
- Adjust weight options for variable weight resistance
- Includes 3 durable weight bags that can each be filled with up to 10 lbs of sand (30 lbs total)
- Adjustable leash length to accommodate athletes of any size