Handy Ice bag small 50g Components, materials &lt;Material&gt;  Fabric: Tetoron + polyurethane (waterproof)  cap: Aluminum  cap: ABS plastic  Packing: silicon features  fever, headache, burns, bruises, muscle pain, knee pain, Nemukezamashi (in learning), and used extensively head, neck, shoulders, arms, and legs, and excellent at usability.  Put the ice water or ice, you can cool ship directly affected area from any angle.  I am strong and last a long time with a special cloth! !  drop of water is hard at special processing!  There is no water leakage in silicon packing!  first aid in sports, cool down  heat temperature after sports: 0 ~ 50