M-sized cold weather ring, suitable up to 50℃, washable and convenient. - Product Name: FUWA POKA RING - Size: M - Temperature: 50℃ - Usage: Cold weather protection Reusable First, click! Second, warm it in hot water! From then on, repeat. Click ▶︎ Warm ▶︎ Click ▶︎ Warm Thank you for viewing.