Adjustable Breathing Trainer Mouthpiece With Resistance Dial

<p>This adjustable breathing trainer is a handheld resistance mouthpiece for breathing and endurance workouts. A rotating dial marked with plus and minus signs lets you raise or lower the resistance to suit your fitness level. The mouthpiece is made of ABS and soft silicone, with textured ridges on the bite pads for a comfortable grip.</p><ul><li>Adjustable resistance dial marked + and -</li><li>Overall height 3.9 in, mouthpiece width 2.34 in, base width 1.01 in</li><li>Weight 1.8 oz</li><li>Material: ABS and silicone</li><li>Base unscrews into separate parts for rinsing</li><li>Individually packaged</li></ul><p>The 2pcs option includes one black trainer and one clear trainer, while the single options are one black or one clear trainer. The trainer is small enough to fit in a gym bag, backpack, or pocket for use at home, at the gym, or while traveling. Each unit is one breathing trainer.</p>

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