The Sleepnet MiniMe 2 is a nasal mask built specifically for children ages 2 to 12 on CPAP or BiPAP therapy, not a scaled-down adult mask. We carry the vented Small/Medium size, and we always recommend confirming size and fit with your child's sleep specialist or respiratory therapist before use, since every child's face is different. The mask uses Sleepnet's patented AIRgel cushion, a silicone gel that sits gently against a child's skin. Paired with Advanced Cushion Technology (A.C.T.), it's designed to hold a seal with minimal pressure on small faces. Custom Fit Technology gives the mask a soft shell built around a shapeable wire, so it can be bent and molded to your child's face rather than relying on one fixed shape. The Touchless Spacebar keeps the support bar off your child's forehead, leaving a clear line of sight for reading or watching a show before lights out. The mask connects to standard CPAP and BiPAP tubing through a rotating elbow that lets the hose swivel as your child moves overnight. If you're using a ResMed AirMini, you'll need a Zephair adapter and a standard hose. Sleepnet also makes a non-vented version for ventilator and NIV use; this listing is the vented version for home CPAP and BiPAP therapy. A prescription is required.