Latex free resistive exercise Val-u-Tubing™ is color-coded in Berry Colors®. Latex free Val-u-Tubing™ is an economical exercise tubing; same great quality as CanDo® exercise tubing; available in 25' bags and 100 foot dispenser boxes; Levels range in order of resistance from least to greatest resistance: pear (0), peach (1), orange (2), lime (3), blueberry (4), plum (5), mushroom (6), pineapple (7).