Our rubber bands are a simple but versatile resistance training tool which is great for muscle toning, stretching and rehabilitation. These are an absolute favourite for professional trainers. Includes 3 different bands. Size - light: L 30cm x W 5cm x T 0.6mm | medium: L 30cm x W x 5cm x T 1mm | hard: L 30cm x W 5cm x T 1.2mm Reference resistance for light: 4kg, medium: 7kg, hard: 10kg.