AMAZON'S #1 RATED BREATHING FITNESS TRAINER! - IMPROVES SHORTNESS OF BREATH & ENDURANCE - THE BEST 7 MINUTE BREATHING EXERCISE FOR ATHLETES. (5 YEAR FULL MANUFACTURER'S WARRANTY)
USED BY NAVY SEALS! - 100% ADJUSTABLE AIR-FLOW VALVE PROVIDES ALL LEVELS OF INHALING (INSPIRATORY) AND EXHALING (EXPIRATORY) RESISTANCE TO FIT ANYONE'S NEEDS. - IT IS THE MOST COMPACT (4"), PORTABLE, DURABLE AND EASIEST TO USE BREATHING FITNESS TRAINER. (100% DRUG FREE)
FLEXIBLE MEDICAL GRADE SILICONE MOUTHPIECE PROVIDES THE MOST COMFORTABLE FIT AND BEST SEAL.- FITS ALL SIZE MOUTHS COMFORTABLY - (SIMPLE EXERCISE INSTRUCTIONS ARE INCLUDED)
"MADE IN USA" BUY DIRECT FROM THE MANUFACTURER ( RISK FREE TRIAL GUARANTEE! - TRY IT FOR UP TO 60 DAYS! "IF FOR ANY REASON YOU'RE NOT SATISFIED, YOU CAN RETURN IT FOR A FULL REFUND!". (FOR MORE INFORMATION VISIT WWW.EXPAND-A-LUNG.COM)
SELECTED THE #1 CHOICE OF THE L.A.TIMES REVIEW! - RANKED ABOVE ALL OTHER RESPIRATORY FITNESS TRAINERS AND ELEVATION TRAINING MASKS! - FEATURED IN THE FOLLOWING MAGAZINES: "RUNNER'S WORLD", "TRIATHLETE", "TRIATHLON CANADA", "AUSTRALIAN TRIATHLON & MULTISPORTS", "VELO NEWS CYCLING", "FREESURF HAWAII", "SKIN DIVER", "HAWAII SKINDIVER", "INTERNATIONAL FREEDIVING", "THE BOX (CROSSFIT)", "BLACK BELT MARTIAL ARTS". "INTERNATIONAL KICKBOXER".