... PP,PE,HDPE...) 4.reusable, safe, non-toxic Ice brickWe manufactured gel items more than 12 years since ... in 1999.Our gel item including:Gel cooler box,ice brick,instant hot or cold pack,hot and ... ,health gel compress.... 1.Usage-Put the gel ice box into refrigerator or freezer to make it got ... drink iced outdoorse) Reusable, Non-toxic, Non-caustic, No peculiar smell3.Panton color for liquid and box is ...