Myprotein Squat Bands Light, Medium, Heavy Weight This is a set of 3. Light and Medium are used, Heavy is unused. You can use it for various training exercises as a tube, such as squats, flexibility exercises, and stretching. It's a sturdy rubber band. Quoted from the official HP below: Take your workout to the next level with the Booty Band Bundle, a set of light, medium, and heavy weight booty bands! Light Blue - Resistance: 25lb, Length: 33cm Light Gray - Medium Resistance: 38.5lb, Length: 38cm Gray - Heavy Resistance: 55lb, Length: 43cm Genre: Les Mills