Dry & Dry 50 Gram Pack of 50 Silica Gel Packets Desiccant Dehumidifiers Packet dimension : 4" x 4" , Silica Gel Beads Size : about 2 ~ 4 mm Premium Quality (30+ Year Experience in Silica Gel Desiccant) - Pure Silica Gel without Cobalt Chloride. NO RISK Packet Material is Special Fabric by Spunbond Technology for "Ultimate Moisture Absorption" and "Heat resistance for Reuse". Packets can be Reactivated by Heating in an Oven for 0.5-2.0 hours at 200-250 F Or Microwave for 10 Minutes at DEFROST. - Packets are stored in Resealable Self-Standing High Quality Bag for Easy Storage and Use(Air Tight Sealing & Sturdy Bag for Moisture Control). We REALLY Want Our Customers to be HAPPY with Our Products. If You are not Happy, We are not Happy. Please contact us. We will Give You Free Replacement or Full Refund Even BEYOND REFUND PERIOD.