The NEW Ronin Wraps "Razor edition" BFR training wraps were specifically designed for upper body occlusion training. They’re constructed from the highest quality materials and are made to be more rigid, giving the right balance of tension and flexibility while doing your reps. We added the numbering system to these wraps for more precision and symmetry. Occlusion training has been tested and proven to safely and effectively build strength and help you gain muscle mass, all while lifting lighter weights. It’s a great option if you need a new way to challenge your body and breakthrough plateaus, need a break from any heavy lifting that might be breaking down your body, or if you need help gaining or keeping strength after an injury or surgery. “From bodybuilding to rehabilitation, BFR is the future of intelligently designed muscular strength and hypertrophy programming, and for good reason, it produces results.” – ESPN