Assurance: Crafted with in , this headgear strap for F40/ F40 ensures top- quality and reliability. Its meticulous design and manufacturing process adhere to stringent standards, providing you with a product you can trust. Application Specific Design: Specifically designed for head application, this replacement headgear strap offers a tailored fit and enhanced comfort. It's engineered to provide a snug, secure fit without compromising on comfort, making it ideal for prolonged use. Battery-Free Convenience: Enjoy the hassle-free use of this headgear strap as it operates without the need for batteries. This feature not only makes it easier to use but also reduces the weight, enhancing comfort during sleep. Comfort and Durability: Made from soft, materials, this unisex headgear strap provides both comfort and . Its gentle fabric minimizes skin irritation and withstands regular use, ensuring it remains a reliable part of your therapy. Description/Features: The F40 respirator strap is designed to provide both elasticity and a fixed grip, ensuring a comfortable fit while securely holding the respirator mask in place. Its versatile design is suitable for extended wear in various environments, making it an essential accessory for effective respiratory protection. Specifications: Product Name: F40 Respirator Strap Color: Blue-gray Material: Nylon, Blended, Polyester Function: Elastic and fixed, comfortable to wear Usage Scenario: Used to fix the respirator mask Package Contents: 1*F40 Respirator Strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.