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Want to impress your friends with the size of your muscles? Buy Xtrim DuraFit Strong Elastic BFR (Blood Flow Restriction) Workout Straps/ BFR band today and build your muscles faster without lifting heavyweights.What is BFR and how does it work?BFR (Blood Flow Restriction) involves wrapping a pressure cuff or band, or even knee wraps around the top portion of a limb or arm to restrict blood flow out of the working muscle. Xtrim DuraFit BFR Workout Straps for ArmThe blood flow restriction band is an amazing yet stylish gym accessory that helps to gain biceps and triceps muscles without lifting heavyweights. When used the bicep belt correctly, the results achieved are really like those achieved with heavy weight lifting. The optimal 2-inch width of the BFR bands for biceps is perfect for arm and shoulder training. How to use it?Xtrim BFR arm band is an easy strap-up accessory, you can easily wrap them above your bicep to isolate it. The biceps blaster/ armbands for the gym are 19 inches in length so no loose slack hanging to worry about. There are no complicated buckles, no instructions needed, the armband for the gym has just one simple plastic loop to slip the band through, and you are ready to lift! Key Features:Extra convenient and super durable - Furnished with a very rigid strap and a quick-release buckleMade for arm and shoulder - Sold in a pair of 2 allowing you to exercise both arms at the same time Comfort-fit technology - Made with premium fabric for easy usage, a strong buckle holds the band tight, so you can focus on repetitions and train without any distractions