Md Buddy MD1318 Resistance Band • Conditioning & rehabbing muscles • Suitable for all fitness levels • Material: TPE, Latex • Level: Yellow(Light)- 1800x150x0.3mm, Pink(Medium) - 1800x150x0.4mm, Blue(Heavy)- 1800x150x0.5mm, Green(X-heavy) - 1800x150x0.6mm