Store: Product FAQs

Q: How do I know which size ball I should use?

Proper ball size is determined by the user's height. When seated on the ball, your hips and knees should be close to parallel with the floor. The following is SPRI's suggested size chart to determine which ball size is recommended for your height.

    55cm        inflates to 21 inches high        5'to 5'7"
    65cm        inflates to 25 inches high        5'8" to 6'3"
    75cm        inflates to 29 inches high        Taller than 6'3"
 
Q: How much weight does a Stability Ball hold?

Depending on the version you purchase, a Stability Ball can hold up to 600lbs. SPRI does recommend the use of our "Slow-Deflate" ball when using weights on the ball. The "Slow-Deflate" ball will deflate slowly in the event of a puncture providing additional safety.

Q: What are the pieces that come with the ball?

Each ball comes with a plug and a small plastic pump adapter. The threaded end piece is the pump adapter that can attach to your bike pump or many other types of pumps or air compressors.

Q: How do you inflate the ball?

You can inflate the ball with a bicycle pump, a service station air pump or an electric air compressor. Trigger-like pumps would not require an attachment; just hold the airflow right up to the hole in the ball.

Before beginning the inflation process, mark on a door or wall the desired height of the inflated ball. As you begin to inflate the ball, keep checking it against your mark. When the ball is equal to your mark the ball is properly inflated. It is recommended for easier inflation that you fill the ball approximately to 50%, let the ball sit overnight, then complete the inflation process. Insert the plug into the hole of the ball and make sure head of the plug is flush; otherwise the ball will leak air. Do not over inflate the ball; over-inflation could cause the ball to burst. Please note: It is normal for the ball to have folds in it when first inflated.

Q: Does the Stability Ball contain latex?

The ball is made with a plastic vinyl clad (PVC) process that does not include latex.

Q: Can an air leak in the Stability Ball be repaired with a patch kit?

There is no safe way to repair an air leak in a Stability Ball.

Q: What are the benefits of using the Stability Ball?

Works the "foundation" or trunk in almost every exercise, whether it is a targeted activity for upper body, lower body, or specifically for the abdominals and low back. Your body can be easily positioned on the ball to go through a greater range of motion. Allows you to be comfortably "off " the floor for many exercises

Q: What is the new Double Xertube?

The Double Xertube has twice the amount of tubing as the Xertube, providing unique dual-tube resistance application.

Q: Which resistance should I choose?

Q: What are the benefits of Resistance Exercise Training?

• Increased muscle strength and muscle mass
• Increased rate of metabolism
• Reduction in body fat and increased calorie burn
• Improved posture, decreased risk of osteoporosis

Q: How often should I exercise with the tubing products?

2-3 times per week, rest a minimum of 48 hours between exercise sessions.

Q: What is the recommended care and usage requirements of tubing products?

• Always check for possible wear on the tubing before each exercise session. If the tubing has a nick or a cut discontinue use of that tubing product and replace it. There is no safe way to repair a tubing product.
• Never stretch the tubing beyond 2 times its resting length. Please note, overhead presses while standing on a Xertube would take the tubing well past its safe working length.
• Never tie two or more pieces of tubing together.
• Avoid using the Xertube on rough or abrasive surfaces. The Xertube is not recommended for use on carpet or pool floors. SPRI offers the Xertube in a protective sleeve for these uses.
• Do not use a Xertube under a step. SPRI recommends the use of our Step Tube for resistance work on a step. The Step tube is longer (to allow for the step risers) and has a protective sleeve.
• Avoid prolonged exposure to sunlight, salt or chlorine treated water. SPRI's rubber products can be used in pools. It is recommended that you rinse them after each use.
• Wear appropriate footwear when using the Xertube. Standing on an Xertube and performing standing hip abductions or wrapping the Xertube around your shoe and doing lateral movements would break down the tubing and would cause the tubing to prematurely break. The Xering would be recommended for standing hip-abductions.

Q: Is the tubing made with latex?

Yes, all of SPRI's rubber resistance products have latex. Those with latex allergies should avoid the use of these products.

Q: Which rubber products do I use for upper body or lower bodywork?

The Xertube, Ultra-Toner, and Xercise Bar are primarily used for upper body exercise with some lower body exercise application. The Xering is for lower body exercise only.

Q: What is the difference between the Original and Deluxe Xertube?

The Deluxe Xertube is an original Xertube with a padded foam handle that provides extra comfort.

Q: How does the X-iser work?

The X-iser® provides training effect that few have ever experienced with any other physical activity, let alone a piece of exercise equipment. It was engineered to ensure correct hip and knee alignment, providing an optimal, impact free workout. The hands-free design promotes the development of stabilizer muscles and correct posture, thus improving balance. The nature of the hydraulics on the machine allows for a technique that produces a "static equilibrium", high-frequency stepping action. What actually happens is, the body's center of mass (waist line) stays constant (meaning from the waist up you don’t move). Imagine balancing a glass of water on your head while the legs are stepping as fast as you can (that is 300 + steps in a minute for an elite athlete).

What makes this unique, is that in order to prevent the body's center of mass from moving up and down (as we see with all other stepping activities) both legs have to work equally against each other, on both the up and down strokes of the stepping action. This "no recovery" protocol leads to tremendous strength gains, while the rapid left to right stepping causes tremendous neuromuscular development that transfers to unparalleled gains in performance. In addition, because of the cardiovascular demand of this challenging exercise, the aerobic AND anaerobic systems are both dramatically challenged, improving overall conditioning.

Q: Why Use the X-iser?

1. Time Efficient - In just 4-12 minutes a day you can get the minimum exercise needed to stay healthy and lose weight
2. No Impact - The machine simulates running without the impact on the ground keeping your knees, ankles, hips and back pain and injury free.
3. Balance - The X-iser has  the ability to improve balance because the nature of the stepping challenges the neuromuscular system thus improving balance.
4. Strength - The "No Recovery Stepping" done on the X-iser will greatly improve lower body strength because it removes typical recovery cycles with traditional stepping.
5. Compact - The machine only uses up two cubic feet of space meaning you can get your sprints in anywhere.
6. Portable - Weighing just 14lbs and folding down flat the X-iser can become your workout on the road as well.
7. Sprinting - Because the machine allows you to sprint you can reap all the benefits of sprint training without having to go to the track.
8. Durable - The X-iser is made of aircraft aluminum alloy and stainless steel, meaning it is built to last a lifetime.
9. Versatile - The machine also allows you to do a variety of exercises so you can get a total body workout.
10. Efficient - Because of the time efficiency, compact portability and array of physical benefits it is the most complete single piece of equipment available.