SAFE MATERIALS: Made of high quality plastic material, firm, eco friendly and practical, wear‑. REGULAR REPLACEMENT: Regular changing the elbow Keep your nasal guard with good performance, your ventilator nasal and hose cleaner after regular replacement EASY TO USE: It is well made simple and reasonable, light weight, and small in size. Easy to connect and use with good performance DETACHABLE DESIGN: It has an elbow shape that can guide the hose to where it is needed so that it get in the way. Detachable, easy to clean, After regular replacement, the nasal mask and hose of your ventilator be cleaner EASY TO CARRY: Nasal guard an important and practical accessory for breathing machine. Light weight, small size, easy to store and carry Material: plastic colour: Transparent white Package Contents: 1 x elbow adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.