Feature:1. Made from environmentally friendly elastic latex,durable and stretch further.2. 5 exercise resistance band strengths-0.35mm (5-10lbs),0.5mm (10-15lbs),0.7mm (15-20lbs),0.9mm(20-30lbs) and 1.1mm (30-40lbs).3. You can combine the resistance bands together to give different resistance levels for your workouts.4. Suitable for yoga,Pilates,working out,stretching and work out etc.Specification:Features:Made from environmentally friendly elastic latex,durable and stretch further.5 exercise resistance band strengths-0.35mm (5-10lbs), 0.5mm (10-15lbs), 0.7mm (15-20lbs), 0.9mm(20-30lbs) and 1.1mm (30-40lbs). You can combine the resistance bands together to give different resistance levels for your workouts. Suitable for yoga,Pilates,working out,stretching and work out etc.Specification:Model: Set 1/ Set 2/Set 3/Set 4/Set 5 (optional)Material: latexSize: 600*50*0.35mm / 600*50*0.5mm / 600*50*0.7mm / 600*50*0.9mm / 600*50*1.1mm Package size: 18*11*2cm/7.1*4.3*0.8in Package weight: Approx. 120g/4.2ozPackage List:5* Resistance Bands1* Carry Bag1* InstructionNOTE:Item color displayed in photos may be showing slightly different on your computer monitor since monitors. Thank for your understanding.Package List:5* Resistance Bands1* Carry Bag1* InstructionNOTE:Item color displayed in photos may be showing slightly different on your computer monitor since monitors. Thank for your understanding.