FDBRO športna dihalna maska za trening z nastavljivim uporom

This sports inhalation mask is designed for fitness, running, and endurance training. It offers adjustable resistance levels and is made of skin-friendly materials suitable for various sports activities.

• The description claims the mask provides adjustable resistance levels with 6 settings.
• The description claims it simulates high-altitude training by increasing breathing resistance.
• The description claims the mask is made of comfortable and non-irritating materials.
• The description claims it ensures stable wear with elastic bands.
• The description claims it operates quietly without noise or strain during use.