Alternativa a las mancuernas | Val-u-Band is the economic alternative to the traditional color-code sequence, and the darker the color of the band, the more resistance it provides. These bands offer the same great quality as CanDo® and Thera-Band® exercise bands while stretching your budget. 50 yard bands are great for high-traffic clinics that want to purchase in bulk, and 6 yard rolls provide convenience to those who want to exercise at home.