Build leg strength with the SKLZ SpeedSac. This variable weigh sled allows your to strengthen your lower body muscle groups by providing options for increased resistance raining similar to metal sleds. You can also use the handles on the bag to execute lunge walks for additional hamstring and quadricep strengthening.
- Comes with: waist belt with adjustable lead, 3 (10 lbs. capacity) weight bags (shipped empty), and SpeedSac with single buckle enclosure
- Aids in strengthening your lower body muscle groups by providing resistance.
- Can use sled while performing lunge walks for additional hamstring work.