Features: 1. New food grade material, HDPE;2. Inside is Super Absorbent polymer cool storage material (SAP)3. BPA free,and safe;4. Perfect sealing, ultrasonic welding.5. Transparent appearance, beautiful.6. High efficiency, reusable .7. Dimensions (Approx.): Height: 16 cm, Width: 11 cm, Thickness: 1 cm Usage : 1. Store in freezer for 12 hours before use.2. Put the ice bag flat before freezing, or put it into a certain shape as needed.3. Recycle for repeated use. Application : 1. Daily life: cold preservation and electricity saving. 2. Medical treatment: effervesce, diminishing inflammation and easing pains, homeostasis, physical therapy and skin care. 3. Sports: accident injury, wrench and in training and matches. Package included: 2* Freezer ice blocks