Seatec Mouth and Chin Strap Range

The Seatec Mouth and Chin Strap provides dual-action jaw and lip stabilisation for CPAP and Bi-level therapy users experiencing mouth leaks or dry mouth while using nasal or nasal pillows masks. Unlike standard chin straps that only support the jaw vertically, this design incorporates an integrated horizontal mouth band to prevent the lips from parting or puffing open under therapeutic pressure.

Size	SKU	Median Head Circumference	Sizing / Target Fit Reference
Small (SML)	4271S	~54 cm (21.2 in)	Petite adult facial profiles / smaller head circumference
Medium (MED)	4270S	~60 cm (23.6 in)	Fits the majority of standard adult head sizes
Large (LRG)	4272S	~66 cm (26.0 in)	Larger head circumferences / broader facial dimensions

Tip: Measure around the crown of the head and under the chin to determine the closest median circumference.Note: The material has some stretch, and the velcro tabs allow for adjustments within these size ranges.

Key Features:

• Dual-Action Jaw & Lip Closure: Combines an under-chin support band to hold the lower jaw closed with a soft horizontal mouth band that keeps lips sealed, eliminating air puffing and oral leaks.
• Multi-Strap Stability Harness: Engineered with adjustable top (crown) and rear (occipital) straps that anchor the harness firmly in place to prevent slipping during active sleep.  
• Reduces Therapy Complications: Minimizes severe dry mouth, throat irritation, aerophagia (air swallowing), and nocturnal awakenings caused by high-flow mouth leaks.  
• Breathable Elastic Construction: Made from flexible, medical-grade elastic webbing that provides continuous dynamic tension without causing uncomfortable pressure on facial skin.
• Hook-and-Loop Fasteners: Features durable Velcro™ tabs on top and rear contact points for easy adjustment and quick morning removal.
• Note: The material has some stretch, and the velcro tabs allow for adjustments within these size ranges.

Compatibility:

• Compatible for use with Nasal Masks and Nasal Pillow Masks.
• Not recommended for use with Full Face Masks (as the mask itself covers the mouth).

Application Guidance:

• Place the chin cup under your chin with the wider fabric covering your mouth.
• Pull the top straps over your head and fasten the Velcro at the crown.
• Fasten the back strap around the back of your head for added stability.
• Adjust both Velcro points until the strap is snug but comfortable (do not overtighten).
• Wear your CPAP mask over the chin strap.

Care and Maintenance Guidance:

• Weekly Cleaning: Hand wash weekly in warm water using a mild CPAP cleanser or non-moisturising liquid soap.
• Fastener Preparation: Fasten all Velcro™ tabs onto the strap before washing to prevent snagging or fraying the elastic weave.
• Drying: Rinse thoroughly and lay flat or hang to air dry completely away from direct heat and sunlight. Do not machine wash, bleach, iron, or tumble dry.
• Replacement Schedule: Replace every 6 to 9 months, or sooner if the elastic stretches out and fails to hold the jaw securely closed.