- Instant Cold Compress - Use these 4"x7" disposable ice packs for minor injuries and initial emergency pain relief. Squeeze the top and bottom of the cold pack together to activate until a pop is heard, shake well, and apply on the affected area for 10 to 15 minutes for immediate relief. - Travel Ice Pack - No need to keep in a freezer. These disposable ice packs are portable at 4"x7" and are airplane safe provided the mix hasn t been activated. Dispose properly after one time use. Great for use on the road, office, clinics, conventions, school, travel, and sports teams.