Features: 1. Made of high grade silica gel, which is harmless, odorless, safe and eco-friendly. 2. Specially designed to remove moisture from the surrounding air. 3. Can be placed in closets, coat or sweater inside the box to prevent mildew. 4. Reusable, just heat in microwave just 5 minutes(medium / low power), color will slowly change back to blue after reactivation. 5. Multifunctional, also suitable for protect the camera, lens, microscopes, telescopes, audio and video equipment, records, tapes, video tapes from mildew. Specification: Condition:100% New Material: Silica Gel Color: As Pictures Shown Plastic Box Size: approx.7.4*7.3*15cm/2.9*2.9*5.9in Weight: Approx.530g/18.7oz Package list: 1 Box Silica Gel Desiccant Bead Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1Made of high grade silica gel, which is harmless, odorless, safe and eco-friendly 2Specially designed to remove moisture from the surrounding air 3Can be placed in closets, coat or sweater inside the box to prevent mildew 4Reusable, just heat in microwave just 5 minutes(medium / low power), color will slowly change back to blue after reactivation 5Multifunctional, also suitable for protect the camera, lens, microscopes, telescopes, audio and video equipment, records, tapes, video tapes from mildew