11-1/2" to 13" Ankle

One size fits most adults

Contains propylene glycol which acts as a humectant (moisturizer)

It Is made of flexible silicone and is hypoallergenic

Shiley 4DCT Disposable Cannula Cuffed Tracheostomy Tube, Size 4 Unna Boot 11-1/2" to 13" AnkleMallinckrodt Medical Inc Shiley Low Pressure Disposable Cannula Cuffed Tracheostomy Tube 4 Size 62mm L, 5mm I. D. x 9 2 5mm O. D., Provides the Convenience of a Disposable Inner Cannula Provides the convenience of a disposable inner cannula, which minimizes the risk of cross contamination and helps protect health care workers Fenestrated tube permits patient to breathe through upper airway, if desired Disposable inner cannula features integral, 15 mm,