SKLZ Pro Band &ndash; 40&rdquo; Professional Grade Resistance Band SKLZ PRO BANDS: Universal resistance bands that do it all and last longer, Pro Bands offer you a proven way to increase both upper and lower body strength. MULTIPLE USES: Available in four sizes with vary degrees of dynamic resistance (Light, Medium, Heavy, Extra-Heavy), SKLZ Pro Bands are great for all users of all ages and fitness levels. VERSATILE TRAINING: Add Pro Bands to your speed training by using resistance to increase lateral speed and acceleration. Great for lower bod development, lateral shuffles, and linear speed work. PREMIUM QUALITY: SKLZ Pro Bands are strong, durable, and portable exercise bands that add resistance to any exercises to build strength. 30 DAY RISK FREE AND 1 YEAR WARRANTY. Backed with a 30-day money back guarantee and 1-year industry-best warranty.