I made the ice pack out of zip lock bags, alcohol, napkins, and water and I put in the freezer for 24 hours. after making the ice I wanted to see if it was really sled. My ice pack didn't take long to do it was really easy and fast to do and I the supplies I needed were all at home. I think everyone can make there own ice pack at home or just buy one. You can make ice packs many way by using different supplies or materials.