Material: silica gel. Size: 16*8.5 cm/6.29*3.34 in. Color: orange, blue. Net weight: about 470g, can be reused 34 times. Intelligent color-changing function: using high-end color-changing silica gel technology, it is blue/orange when dry, and changes color after absorbing moisture. Recyclable: after heating, the original color and hygroscopicity can be restored, reused, energy-saving and effectively reducing the cost of use. Efficient moisture-proof protection: strong moisture absorption, suitable for food, medicine, electronic products and other scenes, effectively preventing mildew, oxidation and moisture problems. Safe material: passed a number of international safety certifications to ensure that the product is harmless to the human body and the environment during use, suitable for the storage needs of various sensitive items. Compact design for easy storage: the small and lightweight design is easy to place in the packaging box or locker, does not take up space and is beautiful and generous, enhancing the customer experience.