[✅training effect improvement: This training mask simulates high altitude environment to increase respiratory resistance improve lung capacity exercise muscle endurance and other performance suitable for cycling running hiking and other aerobic training for training efficiency is the right hand of professionals and amateurs. ✅Durable and adjustable: workout training masks are made of high quality silicone and breathable elastic bands with Class 4 respiratory resistance that meet the needs of everyone from beginners to professionals and can be adjusted according to individual conditions and training intensity. ✅Comfortable wearing experience: athlete training mask is designed according to ergonomics and is suitable for various face shapes. It has an adjustment belt a strong and breathable shoulder strap and soft rubber can prevent the mask from sliding ensuring comfortable wearing during exercise. ✅Scientifically supported training: Designed based on scientific principles fitness training mask increases the difficulty of breathing promotes the body to burn more calories effectively improves endurance and resistance and further improves the training effect. ✅Convenience and guarantee advantages: this lung trainer does not need to remove the mask to change the airflow intensity during training. And the purchase has a 100% satisfaction guarantee which can save training time and help create brilliance in various sports training.]
