The Blackout Training Mask 2.0 helps to increase stamina and endurance for longer, more effective workouts. It allows you to take deeper breaths so your muscles get the air flow they need to keep working. A selection of air resistance caps and base pieces are included so you can ...The Blackout Training Mask 2.0 helps to increase stamina and endurance for longer, more effective workouts.
It allows you to take deeper breaths so your muscles get the air flow they need to keep working. A selection of air resistance caps and base pieces are included so you can select the configuration that meets your preferences. This elevation training mask is made of silicone and includes a neoprene sleeve for a flexible and comfortable fit.