Thera-Band 9ft Red Medium Resistance Exercise Band Latex-Free Bands - 3 Yds - Polybag Pre-cut 9 foot length. 4 inches wide. Polybag clinical packaging. Latex-Free Different resistance levels are determined by thickness of the band Cost much less than other exercise equipment sold with claims of achieving similar results Color-coded levels increasing in difficulty from tan to gold Perfect for clinical handouts.