24 Pieces Glass Nail Files Fingernail File Czech Crystal Glass Nail Files Buffer Nail Care Manicure Tools Set Gradient Rainbow Color for Natural Nail (9 x 1 x 0.3 cm) bee04 Read more How Sparthos affects B001UBXEF6 Read more How Sparthos affects your body Oxygen Restriction Lungs work harder and oxygenate more blood More calories burned by working out at higher intensities CO2 Tolerance Hit exhaustion later with more stamina Boost your tolerance for high intensity activities Mental Focus Growth Thrive outside your comfort zone Improve mental focus and toughness Breathing Muscle Boost Strengthen the diaphragm and other breathing muscles Retrain your body to breathe correctly Read more 16 Breathing Levels That Continue To Challenge Your Body While most training masks look the same pleasant skin sensation and has antiseptic properties perfectly shapes natural while leaving them smooth 3 cm Quantity: 24 pieces in total