A scarf is one of the essential accessories for a cold environment. It might increase the risk of falling to have a bulky or large size scarf for some outdoor activities. The elderly are more vulnerable and likely to fall. To encounter extreme weather with a small scarf, we integrate textile technology for turning fabric into a warmer. To protect the neck from strong wind, we need the scarf to be soft and flexible enough to wrap around the neck. With the sensitivity of the skin, the material has to be comfortable. The patented technology is distinct from other conventional heat-generating appliances. It integrates with natural Merino Wool to a textile wearable. Once it is plugged, this single layer of fabric will warm up without adding other clumsy protective layers. The unique breathable materials enhance wearing comfort. Adjust the heat-setting level and timer from the smartphone app. The warmth can promote blood circulation between the neck and head. Ultra-slim power bank, with only 7mm thickness and 61g weight, is good enough to warm up for 2 hours.