The ResMed AirFit N30 offers a soft, under-the-nose nasal cradle and slip-on headgear. This mask is a easy to put on, take off, and clean with only three parts-and weighing in at  1.6 ounces, including whisper-quiet features.
N30 Nasal Mask Features and Benefits:
Operates at a Mere 18 Decibels
Nasal Cradle Cushion Creates Open Line of Sight
Easy Assembly and Secure Seal
Adjustable Elastic Headgear
Headgear / Frame Sizes: 
One Size Fits Most
Available Options:
Small
Medium 
Small Wide