Shorter CPAP tubes designed specifically for CPAP masks. Composed with lightweight material and equip with a swivel feature the short tube is a direct connection from mask to CPAP tubing. Geniusly designed with a 360 degree swivel to assist in smooth transition in bed for those of you who turn frequently through out the night. Not all masks are designed with short tube. Be sure to read product description to ensure compatibility. It is recommended to change out short tube every 3-6 months.