How it works
From ordering at Closen to delivery: four clear steps.
1
Choose
View technical mask specifications, resistance settings, and user instructions on the product page. Check reviews and add to cart.
2
Order
Pay via cash on delivery or bank transfer. You immediately receive a confirmation message with your order code.
3
Dispatch
Early ordering means same-day dispatch: secure packaging and handover to the courier with tracking code.
4
Use and return
Adjust the mask according to instructions. If you change your mind, return it within 30 days per our return policy.
Manufacturing standards and transparency
- Hypoallergenic medical siliconeFits securely on your face without causing sweat irritation or leaving marks after intense exercise.
- Precise mechanical airflow adjustmentFour mechanical resistance levels with interchangeable rigid ABS valves, free of electronic components that wear out.
- Manual fit inspectionEach mask is unboxed and tested at all seal points in our lab before being placed into sealed packaging.
- Secure home deliveryShipped in a protective hard carrying case via courier, with cash on delivery available upon receipt.
Common questions
how to choose the right mask size
The Closen mask features a one-size-fits-all flexible silicone body covering the lower face. The adjustable neoprene strap with wide velcro easily fits head circumferences from 48 to 62 cm. If you need clarification, please contact us before ordering.
what materials is the mask made of
The main body consists of fully hypoallergenic medical-grade silicone without added latex or plasticizers. The regulation valves are made of solid ABS thermoplastic and the strap is made of perforated neoprene. All materials resist moisture and frequent cleaning.
how to clean and maintain the mask
Remove the ABS valves from the silicone casing with a simple twist. Wash the mask body and valves with lukewarm water and mild soap after each use. Allow the parts to dry naturally away from direct heat sources before returning them to the case.