- Size options: two sizes available (approx 25 x 92 cm and 25 x 162 cm). Tailored to fit any sliding window type perfectly and compatible with all portable air conditioners or dryers. - Prevents cold air escaping: made with TU fabric to minimize cold air loss and reflect sunlight away from your space, helping keep rooms cooler and reducing energy use. - Complete window sealing: provides a comprehensive seal that blocks drafts and prevents gaps. A robust adhesive tape ensures a tight, gap-free installation for maximum protection. - Enhanced detailing: carefully designed cutouts allow easy adjustments without compromising seal integrity. The textured edge around the outlet helps secure the tape and prevent peeling. - Practical use scenarios: 1) In a living room with a sliding window, seal around a portable air conditioner to maintain cooling efficiency. 2) In a sunlit room, reflect heat away while reducing energy consumption. 3) Around a portable dryer vent to prevent heat loss and drafts during use.