Low powder resistive exercise Val-u-Tubing is color-coded in Berry Colors. Low powder Val-u-Tubing is an economical latex exercise tubing; same great quality as CanDo latex 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). For those with latex sensitivities, there are latex-free alternative offerings of Val-U exercise tubing.