Caution: color: we according to the color of the first picture, in the package: if the quantity is not stated in the description, we will the item according to the quantity and model number in the title. Higher resistance bands, professional non-latex elastic exercise bands purple the product is based on the color or size of the main image of the product page. Colour:purple made from upgraded rubber material, not sticky material, eco-friendly, non-toxic, odor free&latex-free, available for those with a latex allergy. Durable, elastic, lightweight and portable, the band is compact,which works well in the clinic, the gym, at home or on the road. The bands are perfect for resistance training and rehabilitation, the resistance band is simple&effective tool, which provides both positive and negative force. The more the band is stretched, the more the resistance increases, and the band will contract as the force decreases. Multiple exercises can be performed with a single resistance band. Ideal for resistance training, physical therapy and mobility training, you can take a couple wraps around your hands for more tension and a secure grip. Or just tie a knot, for use as a loop band, and also you can double them up for even more resistance. The bands are vibrantly color-coded, once you are ready for a more challenging workout, you can move up to the next color.