Instant Warmth! Reusable: Boil water in a pot, place the warm neck warmer inside, and heat for 5-10 minutes until it becomes liquid. Move the metal piece to the tip and gently bend it until you hear a "snap," causing the liquid to crystallize and heat up, releasing heat at a suitable temperature. You can reuse the neck warmer repeatedly using this method. *If it doesn't generate heat after pressing the metal piece once, press it again. Ideal for various situations such as commuting, going to school, cycling, fishing, watching sports, snowboarding, skiing, walking, outdoor activities, and indoor work. ✼••┈┈••✼••┈┈••✼••┈┈••✼••┈┈••✼ ✿.•Instant purchase welcome・Silent purchase at midnight OK•.✿ *First come, first served for single items♬.*゜ *Welcome to bulk purchases, feel free to comment ♥Free shipping! ・Please understand that items are stored at home and will be shipped in simple packaging. ・Please check the actual photos for the condition of the product♪ ※To offer the lowest possible price, we may remove the item from its box for shipping due to shipping costs. ・We inspect the products before shipping, but if there are any defects, please contact us "before" leaving a review. ✼••┈┈••✼••┈┈••✼••┈┈••✼••┈┈••✼ [Hiyear] Neck Heater Neck Hot 50℃ Neck Warmer Warm Neck No Battery Required Reusable Neck Hanging Warmth Heating Cold Protection Ring Hand Warmer Ring Neck Warmer Warm Cover Included Cold Weather Measures Outdoor Leisure Sports Stylish Men Women Children Pets Winter (PINK) 25109951.34