Auto Sealing Water Injection Ice Gel Packs - Portable, Reusable and Long Lasting | For Lunch Bag, Lunch Box, Cooler and Injuries (Bulk Pack 10 PCS, 4.7 x 6.7 Inch)

Easy to use, just fill with water. However they tend to not stay frozen/cold compared to other ice packs I've used. However they're small size is an advantage.

I'm very happy with these bags. The material is heavy duty and they should last for many years. They certainly kept cold for much longer than I anticipated. A quality product that I highly recommend. Easy to fill with water (that will turn to gel) and automatic seal after you insert water. I used these to top my Coleman steel belted cooler and they stayed frozen or at least half frozen for the 48 hour period.

I ordered these for school lunches. The product was more expensive than most others but was swayed by the description and spent the money. It was supposed to be filled with gel. When it arrived, not one of the ten cooler packets had much gel in it and I was stupid enough to still try freezing them in the hope there was more to it. However, the ne t day I lifted frozen plastic out of my freezer that was absolutely a waste of time. Sub-standard, cheap, nonsense. Do not waste your time, money or effort on this.

Wasn’t sure about these when they arrived but they really are very useful and convenient. I recently had surgery and could not have survived without them !

Bought these for my son, he states they work very well and keep his lunch cold

Very interesting product. They last a good while out of the freezer.