ZoN Pink Resistance Tubes - Medium Resistance Free downloadable content includes: Breast Health Fitness Video, 101 Breast Cancer Facts, Self-Exam Guide, and "The Little Bright Book" by Bright Pink&reg; Compact and portable. Great for travel and home use. Break-resistant latex material provides consistent stretch. Available in two resistance strengths: Light and Medium. Ideal for resistance training, aerobic endurance training and rehab.