The warmer is made of high-quality silicone material; it’s available for hot and cold water. You can use it as a remedy for pain and injuries. It is the best gift for friends or families. The hot and cold water bottles can be used in different seasons. It can keep you warm on cold days, and it can also be used as an ice pack. You can customize your own logo in a certain position to show your brand. Please feel free if you are interested in our items or need more assistance. Measuring 6.88*3.14*1.65inches, this custom silicone portable hot water bag. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization: Logo printing available with multiple packaging and color options. Product Highlights: Eco-friendly material, reusable, foldable for storage.