Most CPAP hose covers have a soft fleece outer layer and a durable polyester inner lining; some product listings may simply list polyester as the material.
Common lengths are 6 feet and 8 feet, though some products may offer other sizes — check the product listing for exact length.
They insulate the tubing to keep it warmer, which reduces temperature differences that cause condensation (rainout) inside the tube.
A soft fleece outer lining cushions the tube and prevents it from rubbing loudly against skin or surfaces, reducing sleep-disrupting noise.
Open the full-length zipper, wrap the cover around the tubing, then zip it closed for a secure, easy install.
These are described as universal wraps designed to fit most CPAP and BiPAP tubing.
The outer layer is typically super-soft fleece and the inner layer is a durable polyester lining.
They insulate the tubing to reduce condensation (rainout) and use a soft fleece exterior to cushion the tube, preventing rubbing and noise that can disturb sleep.