The Small thrml.™ AIRCAP™ Cover is designed to fit hot tubs measuring;

• 83” x 83”
• 84” x 84” 
• 85” x 85” 

Our patent pending Ziptech™ modular system allows you to zip on your proper skirt size using one of the (3) skirt sizes provided for a custom fitted long lasting spa cover.

Made with advanced insulating AirLoc™ technology, the AIRCAP™ cover helps retain heat, reduce energy costs, and minimize water evaporation.

The AIRCAP™ is 10x more durable than a traditional foam cover and moisture-resistant materials ensure a long-lasting performance, making it an excellent addition to your spa. The AIRCAP™ won't absorb moisture and stays lightweight year after year. 

Easy to install, the AIRCAP™ provides an extra layer of protection to keep your hot tub warm and efficient year-round.