Good questions.
Short answers.

The MundFix is a soft supportive band for the neck: it holds the jaw gently up, so that the mouth stays closed during sleep and does not draw attention. It is worn on the outside, blocks no air supply through the nose and affects no mask technology. That is why it works together with all common nasal and full-face masks.

No. A classic chin strap runs over the top of the head and pulls the lower jaw backwards from above; many people experience that as a pull on the jaw joint. The MundFix is a neck band: it sits around the neck, supports the jaw from below and thereby holds it gently up. No band over the head, no seam on the face, no pull on the mask. Anyone who could not get on with a chin strap is exactly the person the MundFix was made for.

Before going to bed, place the band loosely around the neck and close the hook-and-loop fastening so that it supports the jaw gently from below. It should sit close, not constrict — there should be room for one finger between the band and the neck. After the first night you will have the fit; it becomes meaningful from the second or third night onwards.

The MundFix is a memory foam neck band: highly elastic memory foam with polyester and silicone, elastic, dimensionally stable and perforated, and therefore breathable and kind to the skin. Latex-free, so it also suits sensitive skin. It is closed with an infinitely adjustable hook-and-loop fastening, without buckles or metal parts. One size for neck circumferences from 32 to 46 cm, band 47 cm long, 9.5 cm high, around 50 grams light.

With daily use and normal care we recommend replacing it after about 6 months. Many customers use it for longer. Wear shows above all in the elasticity of the band.

Yes, by hand at 30 °C with mild soap. Not in the washing machine, not in the tumble dryer. Air dry, no fabric softener.

Grey or black are the discreet versions. Pink and turquoise are popular with couples who deliberately wear different colours.

No, the MundFix is not a medical device within the meaning of the Swiss Medical Devices Ordinance. It is a mechanical everyday helper for more comfort at night. For medical questions please speak to your pulmonologist.

14 nights money-back guarantee. Try it for two weeks. If it is not for you, write us a short email to info@visastar.ch with your order number; we will refund the full purchase price via Stripe within 3 working days, without a return shipment. Hygiene items are disposed of properly at your end. No questions, no small print.

Yes. Plain box, no brand print, no indication of the contents from the outside.

Free from 2 items, CHF 10 for a single one, 1 to 3 working days from Binningen BL. Ordered on a working day, the goods usually go out on the next working day.

Currently only within Switzerland and Liechtenstein. Germany, Austria, France and Italy will follow at a later stage.