TRAININGMASK 3.0 Performance Breathing Trainer -Altitude Training Mask Stamina,

Medical Grade Elastomer Made in the USA and Imported PUSHES YOUR LIMITS - Amp up the intensity of your workouts with our athlete training mask. Its revolutionary multi-level resistance feature enhances your fitness tolerance by improving your breathing power, flexibility, and stamina. ON-THE-FLY ADJUSTMENT - Set the breathing resistance of your fitness training mask, even while completing your routine! Equipped with multi-patented Nxt Forc3 technology, it allows you to carry on with your workouts without interruptions. DURABLE AND BREATHABLE TRAINING MASKS - Our 3.0 training masks for men and women are made from light, durable materials. Since its sleeves are fashioned from moisture-wicking neoprene, our workout training masks are excellent for intense routines.