【Product Name】 High-Performance Training Mask (with Double Valves and Filter) 【Condition】 ☆ Brand new, unused! ★ No comments, instant purchase OK! ☆ Shipped via safe and secure anonymous shipping! ★ You can also track the shipping status with a tracking number! 【Product Description】 Perfect for marathon training, jogging, and strength training! This high-performance mask is recommended for those who want to enhance their respiratory training effects. With the same design as the masks worn by the hunters in the TV show "Toso-chu," it looks and functions great! Also useful for everyday use and protection against harmful substances during work. 【Product Features】 ・Double valve design for comfortable breathing! 　→ Takes in air smoothly when inhaling, and the valve opens to release stuffiness when exhaling! ・High-performance filter can be installed! 　→ Effective against pollen, PM2.5, dust, etc. ・Adjustable size with Velcro! 　→ Fits snugly on the face and prevents slippage during exercise! ・Made of mesh material with excellent breathability and sweat absorption! 　→ Doesn't get stuffy and is comfortable to wear for long periods! ・Eco-friendly design that can be washed and reused! 　→ Durable and economical. ・Filter and valves are removable and easy to clean! 【Color】 Black 【Size】 ・FREE SIZE (Unisex) ・Adjustable with Velcro (fixed at the back of the head) 【Material】 ・Mesh fabric (special material with quick-drying and breathable properties) ・With valves & filter 【Shipping Method】 ・Anonymous shipping (Rakuraku Mercari or Yuuyu Mercari) ・Valves will be sent separately in a dedicated bag to prevent damage. 【Notes】 ※ Due to being an imported product, there may be minor scratches or loose stitching. Please refrain from purchasing if you are looking for perfection. ※ Be sure to set the filter and valves before wearing. ※ Hand washing is recommended. Please care for the filter with disinfectant spray, etc. ※ If there are any defects in the product, please contact us before leaving a review. We will respond with sincerity.