Oxyflow Breathing Trainer Portable Muscle Trainer with Adjustable Resistance Improve Endurancee and Strength for All Daily Fitness Trainer Easy to Clean 2PCS (Black/White)

[Adjustable Resistance Exercise Trainer: Portable breathing trainer comes with a rotating knob for easy intensity adjustment. Effortlessly customize resistance levels to suit your personal fitness goals Enhance Endurance: Oxyfit breathing trainer can help exercise muscles improving physical endurance and athletic performance Easy to Use & Clean: Oxyflow breathing trainer is lightweight with a silicone mouthpieces and ABS handle. Simply disassemble rinse and reassemble for continued use Portable and Compact: Breathing trainer features a sleek compact design perfect for on-the-go use. Take it anywhere anytime for convenient breathing practice Essential for Sports: Breathing and endurance trainer boosts endurance and muscle in running swimming gymnastics and outdoors. Elevate your performance]