Adopted high temperature and high pressure shaping technology, this product has strong durability and wear resistance, which can prevent explosion and prolong the lifespan. After filling water, it can be heated in a microwave to avoid the trouble of boiling water, which is convenient to operate. When crush in fever or sports sprain, it can be used as an ice pack for low temperature cold compress. Made of silicone material, this product is flexible and durable to use, which does not contain substances that are harmful to the human body. The length of this product is 23.6cm, the width is 9.6cm, and the height is 4.3cm. It is a perfect birthday or holiday gift for friends and family. Since it passes the 3-hour heat preservation and cold preservation test, this product is long-lasting and temperature-locked to use. Item Name: Hot Water Packs Material: Silicone Capacity: 550ML Features: Long Lasting, with Soft Cover, Easy to Use Size Details: 23.6cm x 9.6cm x 4.3cm/9.29" x 3.78" x 1.69" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Knitted Cover 1 x Hot Water Packs