Product "SpeedSac - Variable Weight Sprint Trainer" by SKLZ

About the Product: Build explosive leg drive out of the blocks with the SpeedSac. This variable weight sled allows you to strengthen your lower body muscles by resistance training, similar to metal sleds. Practice exploding from a set position, improve your dash time, and increase overall speed. With removable weights, the SpeedSac allows you to adjust the towing resistance. You can also use the handles on the bags to perform various upper and lower body exercises such as lunges or front raises.

Features:

• Includes 3 durable weight bags that can be filled with up to 10 pounds of sand (30 pounds total). 
• Sled material won't harm grass or mark wood floors. 
• Adjustable leash length to accommodate athletes of any size. 

Sand not included.

My review: This is a very nice set of exercise equipment that will help you exercise your leg muscles. After 20 minutes exercising you will discover muscles that you never new were there, as they all will be hurting like hell.

The sealing of the packages is excellent, so you do not make a mess after filling the bags with sand. I use my bags in my basement and there is no sign of sand anywhere. My wife would be very mad at me if that was the case...
The product comes with a workout poster. On one side, we have recommended drills for only the speed sack and on the other side, a 6 week workout program that combines the speed sac with other SKLZ products, and both have beginners/advanced adjustments. A DVD with instructions is also included in the shipment. The DVD gives demonstration videos for most of SKLZ products. Each video demonstrates regular speed and slow motions with different angles so you can see and teach proper form.

Amazon.com was kind enough to provide this product for me through their Vine Program for reviewing and I was not requested to provide a positive review. Opinions expressed here are my own.

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