The SKLZ Speed Sac is an Indoor/Outdoor Variable Weight Sprint Trainer. Build explosive leg drive out of the blocks with the Speed Sac. This variable weight sled allows you to strengthen your lower body muscles by resistance training similar to metal sleds. With removable weights, the Speed Sac 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.
The SKLZ Speed Sac provides variety in providing a stimulating workout. It helps to develop anaerobic power and muscle growth. The SKLZ Speed Sac is also great for strengthening muscles to withstand the rigours of more intense work outs – this is known as pre-conditioning or pre-training. The power walk will pre-condition the legs and back, for example, before more explosive running work outs are tackled.
In addition the SKLZ Speed Sac helps to develop functional strength as sled work involves numerous muscles and joints over functional movements. In addition arm and legs work together to coordinate movement and core activation is integral to stabilise the body as the limbs exert force on the sled and training surface.
The SKLZ Speedsac is made of durable lightweight and low density materials, which unlike conventional metal sleds that can be bulky, cumbersome, and potentially dangerous. It provides athletes with the proper amount of weight in order to increase running speed.
The ZKLZ Speedsac was specifically designed to do the following:
1) Increase stamina for multi-sport team training
2) Increase sprint power
3) Reduce 40 yard dash time.
This is a high quality, durable product that is built to last.
Includes 3 durable weight bags that can be filled with up to 10 pounds of sand (30 pounds total) – Adjust weight options for variable weight resistance
- Won’t harm grass or mar wood floor
- Adjustable leash length to accommodate athletes of any size
- Includes Instructional DVD and 6-week progressive training workout plan
- Improve your overall speed and explosiveness
- Strengthens lower-body muscle groups
- Great for baseball and softball training, as well as other sports
- Proven to improve 40-yard dash time and overall speed
- Recommended for indoor and outdoor multi-sport training
- Sand sold separately
Postage weight in pounds – 6.6
Product in inches – L x W x H – 14.0 x 11.0 x 7.0
Waist belt width – 4”
Supports maximum waist – 40”
Item model number: SAQ-SS01-02
Package comes with:
SKLZ Speedsac sled assembly (includes sled, adjustable yellow leash/strap, and waist belt)
3 – Yellow 10-pound sandbag shells
Improves stride length while maximizing acceleration and speed with the SKLZ SpeedSac Indoor/Outdoor Variable-Weight Sprint Trainer. The SpeedSac includes three durable weight bags, each of which can be filled with up to 10 lbs of sand (sold separately) for the ultimate lower-body workout. The weight bags can also be used during lunge walks for additional hamstring and quadriceps strengthening.
SKLZ Speed Sac is an Indoor/Outdoor Variable Weight Sprint sleds are most often used on natural terrain, but the turf increases the drag and provides a less stable surface for the sprinter. It may be a great strength gain activity, but may not be recommended when the workout objective is maximum velocity mechanics.
In addition you need to purchase the sand in order to fill the weighted bags, however by doing this, is does reduce significantly postage costs.
What people are saying?
One reviewer states, “The outside of the speed sac is durable, like a tough rubber mat that you’d put in your pickup. The Velcro for the belt does its job perfectly. The loop joining the bag and belt is big and solid, and the hook mechanism to hold the three 10 lb sand sacks is more than adequate. Nothing is falling out of this.”
This review also highlights the age versatility of the product: “Works well for a wide age range. Easy to use and durable. Easy to adjust weight. Easy to transport with one hand. Great product.”
Another states, “This product is great. I use it every week in my training and I can honestly say that it’s one of the things that’s allowed me to see the most improvements in my sprinting the fastest. The best thing about it is that it’s portable and durable. For people like me that train alone most of the time, it’s the perfect accessory because you can use it all by yourself”
All the reviews highlight the quality and workmanship in this product as being hard wearing and certainly fit for purpose. In addition the reviews focus the benefits of the SKLZ SpeedSac – Variable Weight Sprint Trainer when used correctly in individual or team sports within exercise and sport.