ProFlex Stretch Machine ProFlex Stretch GUARANTEES 30 to 50% increase in total body flexibility within 30 days Effectively: (1) Measures Progress (2) Insures proper spine angle & technique (3) Muscle relaxation...assisted stretch Safe and very sturdy; superior results for sports, fitness and medical applications (ages 12+) Video links for Assembly, Usage, and Advanced Stretching; workout charts to record progress Portable with upright storage; easy assembly with included tools, 3-year warranty (normal use)