SKLZ SpeedSac Variable Weight Resistance Training Sled - Build Speed

In this review the SKLZ SpeedSac is examined as a simple, adjustable resistance sled for athletes focused on shortburst speed and lowerbody power. The most compelling reason to buy is the variable weight system: three removable sand bags let a coach or athlete tune towing resistance from light to heavy without specialized plates. The unit is aimed at sprinters, football players, and similar field athletes who need portable, multidirectional drag work and a quick way to progress overload during sprint or agility sessions.

Key Features

• Variable weight system: Three removable sand bags allow incremental increases up to about 30 lb of towing resistance to scale workouts as strength and speed improve.
• Multidirectional ring: A 360degree belt ring enables lateral, backward, and angled drills so athletes can train strength and mobility in any direction used in sport.
• Adjustable leash and waist belt: The leash and belt adjust to fit different athletes securely for stable towing mechanics and consistent resistance delivery.
• Durable shell: The nylon shell and Velcro straps are designed for repeated use on grass, turf, or wood, making it practical for field or gym sessions.
• Portable kit: The Speed Sac includes the shell, three sand bags, leash, and belt so sessions can start quickly; sand is the only fill material required.

Who It's For

The SpeedSac is best for high school and club sprinters, football skill players, and conditioning coaches who want an inexpensive, portable tool for resisted sprints, sled drags, and multidirectional power work. Its simple design is useful for athletes who need to progress resistance without large hardware or a dedicated sled track.

Athletes seeking heavy, plateloaded sleds for maximal strength development or commercial gym owners needing highduty equipment may want a more rugged, platecompatible sled. Users who prefer exact calibrated weight plates rather than sand increments should consider alternative systems.

Pros & Cons

Pros

• Adjustable resistance with three removable sand bags gives clear progression for speed and power training.
• 360degree belt ring supports multidirectional drills for sportspecific mobility and strength.
• Lightweight and portable kit is easy to carry and set up on grass, turf, or indoor surfaces.

Cons

• Durability reports are mixed; some users find the shell and straps long lasting while others note wear after weeks of heavy use.
• Sand fill means weights are not precisely calibrated like metal plates, which may matter for highly controlled loading.

Specifications

Our Verdict

The SKLZ SpeedSac is a practical, affordable tool for athletes who want portable resisted sprint and multidirectional power work without bulky equipment. It offers clear progression via removable sand bags and flexible drill options, making it good value for teams and individual athletes. Those needing heavy plate precision or industrial durability should evaluate heavier commercial sleds instead.

Frequently Asked Questions

How much weight can each bag hold?
Each removable sand bag can be filled up to 10 lb for a total of about 30 lb of towing resistance.

What surfaces can it be used on?
The nylon shell is intended for grass, turf, or wood surfaces; performance may vary on very rough terrain.

Is sand included?
The kit includes three empty sand bags but sand is not included and must be supplied separately.