Ōura Ring Sizing Kit - Gen 4 HME The minimalist design simplifies usability

The minimalist design simplifies usability and menu navigation

double the lifespan of other CPAP batteries

The Transcend Micro AirFlex Hose is designed with flexibility and portability in mind

Wake up refreshed—no matter when you sleep

Compact and Lightweight:  At just 450g it’s one of the smallest and lightest CPAP batteries on the market

Ōura Ring Sizing Kit - Gen 4 HME The minimalist design simplifies usabilityOura rings sizing kit. We recycle our fitting kits through multiple users as part of our overall drive to reduce plastic waste. Therefore we charge a small fee for the kit, which we fully refund if you return the kit to us once you know your size. (Normal shipping charges apply). Oura Ring Sizing Here's what to expect. Step 01 Once you place your order, youll receive your free sizing kit as soon as one is available, usually 1 2 working days. Step 02