Portable Design - Suitable for indoor and outdoor use. The Portable AC Hose is easy to carry, compact and practical, lightweight, with a simple style, and can be carried anywhere. Compatibility - AC Hose Coupler is compatible with fresh air system connecting pipes and the air conditioner's exhaust pipe, and can be connected to the exhaust pipe. Easy Usage - Air Conditioner Hose Adapter is easy to use: it can be connected to the exhaust pipe without needing to rotate left or right, and its length can be extended as needed. Repeated Use - Air Conditioner Hose is designed for long-term use: reusable and made of soft material, not easy to deform or damage, strong and durable. Use scenarios - Camping or outdoor events: use with a portable AC to vent hot air in locations without standard window setups. - Apartments or rooms with limited window space: extendable length allows routing the exhaust through windows or small openings. - Home workshops or mobile setups: move the portable AC between rooms or units, benefiting from reusability and adjustable length.