Our black band provides 25-65 lbs. resistance for an optimal workout experience. Knee Support Elastic Bandage Compression Sleeves Brace For Arthritis Running Gym. 3 Different Resistance Levels - These exercise bands are available in three distinct resistance levels.: Red(15lb Entry Level), Black (25-65lb Advanced Level), Purple (35-85lb Senior Level), you can choose the most suitable resistance level.
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