The 4 colors are: RED, GREEN, ORANGE, PURPLE. High-quality Latex-free grooming elastics, LARGE size, 7.9 mm - approx. 400 count. Space age material outperforms Latex and rubber. Will not cause allergic reactions. Other uses: dog bows, doll hair, corn row bands, horse manes, craft use. Heavy weight, FOUR MIXED COLORS, 5/16" (7.9 mm), considered LARGE size. Medical-grade synthetic polyisoprene. Consistent force up to 500% elongation. The 4 colors are: RED, GREEN, ORANGE, PURPLE. They are manufactured here in the United States by Fantasy Farm Products Co. to precise size and will provide the user with consistent handling predictability. Not available from anyone else.