I have used cooler shock blocks for years... and this plastic format has various advantages over the cooler shock's mylar version of the same product. This blue plastic version is much gentler on your hands when handling the cold cooler pack.My complaint is how difficult it is to mix the water into the packs during set up, without causing a powdery non functional area of the cooler pack. Even after creating six of these packs I still didn't master the process. Essentially, you want to add water slowly and mix it up as you go... Keep the powder away from the handles... this is the number one most difficult spot to get the water into... almost all of my cooler packs have a dry powder section in the handles where I couldn't get the water to reach.Add a bit of water... then shake it up... add some water... shake it up... move the powder around... add some water... shake it up... until the pack is full. Finally squeeze it and hold it upright so all the air comes out the top... then quickly put the top on. Grab a friend for the last step so that you can squeeze the pack tight, while the friend screws on the top.Honestly, it might be better if the pack wasn't clear... because if I couldn't see that the pack wasn't mixed correctly, I wouldn't notice any difference and then it wouldn't bother me... Ignorance is bliss.

They really work well, keep food very cold for hours and appreciate that the design includes a handle on the ice pack.

I bought these ice packs for a long travel to keep my contents in my cooler colder. However I was missing the silicone corks After I filled these. But no worries I called Amazon customer service and they sent me replacement ice packs the next day. Awesome customer service. In a good company to buy from. The size of these coolers were amazing and they were then to work I could put more stuff into my cooler and the reason I bought them in the beginning was because they stay colder than other ice packs and they don't melt wet like ice. They're good value for the money they fit well not taking up much room at all, they're not heavy they're thin enough to lay on the bottom or on the sides of your cooler and you can take them anywhere with you they're very versatile making these nice for a long trip or to keep your beer cold while you're working in the garage around on the deck

These cooler packs can be a bit fiddly to fill up with water; I used my own funnel. But they work well. As these freeze at 18F (-7C) I would not use them for keeping food cool, it is likely to freeze them. But they are great at keeping food frozen, when defrosting a freezer. I have used then to keep food below -10C for over 12 hours.

Made a 10 hour trip from Kentucky to the OBX . Bought 8 large Ice Packs to keep frozen foods cold and cold goods cool for 24 hours. I used 3 types of coolers:** all coolers were hauled in my open trailer but tarped for a 10 hr trip. Ave ambient temp was 80-90 partial sun / rain.1- Medium size 5-day ice cooler ( used 2 packs for cold meats cheese ect) stayed cold 30 hours1- Large size 5-7 day ice cooler ( used 2 packs for frozen foods) stayed cold 60 hours1- XXXL Colman Older Cooler ( used 4 packs for cold bulk items fruits, veggies, milk, creamers, butter ect) 40 hours .Likes:the size, thinness & sturdinessstacks good in freezerlike the B/I handlesCan be used laying down to keep sandwiches, chips, cheeses, chips cool for 12 hoursUsed up right as drink divider like waters one side, teas on the other. Seems to keep drinks colder on edge for 24 hours.Dislikes:Does not keep items cold as Advertised to 48 hours. ( maybe never open the cooler once packed, but thats not realistic during a 48 hr period.Took the medium 5 day ice cooler daily to the beach loaded with beer & snacks with 2 packs every day. Only good for 6 hours.The thicker more brick looking ice packs last longer but bulky less storage.Result: thin is good for day trips on a boat , car trips or under an umbrella.Thicker other brands maybe better for direct sunlight hot summer days

Wanted to get something cheaper but effective for my yeti. These for perfectly along the back wall, along with a couple of their smallest flexible ones they’re brilliant.Did some very unscientific experiments with my yeti, iceytek and different ice packs and these stayed cold much longer than my other packs. Work the order as nothing else similar in the UK

Come on Party outdoors

Fantastic temp retention.Keeps things very cold.Just ensure you follow the initial instructions.Wouldn’t hesitate to recommend.

Let me start this review by stating a fact. YOU WILL NOT FIND A BETTER ICE PACK! We live in South Carolina and it gets pretty dang hot down in here in the summer. Heck, it gets pretty dang hot down here in the spring. I got tired of constantly buying ice every day when we go to the beach, lake, boating, camping…and we go a lot. I was determined to find the best ice alternative at a good price point and after reviewing a few products I decided to go with Cooler Shock. And I tell you right now, I am SO GLAD I DID! I bought the “original” foil Cooler Shock large 3 pack ice packs about 1.5 years ago. I loved them so much I bought another set, and then another…well, you get the point. I bought a lot. We have some for our soft side cooler for beer/water or whatever we’re drinking for the day. We have some for our large fishing cooler to keep our fish cold until we get back and can get home and get them cleaned. Well anyway, those were nothing short of amazing and were worth every penny I spent on them, but more importantly what I saved by not having to buy ice! Well, enough about those. I need to get to talking about what you came here to read about, the NEW and IMPROVED hard plastic Cooler Shock ice packs. I received the new hard packs on 10 July 19, filled them according to the instructions and placed them in the freezer. These new hard plastic ice packs feel and look like they are built to last. Unless you lose them or run over them with a tank, you will most likely have these packs forever. As with the foil packs, we plan to use these packs on the boat, at the beach, at the lake, camping, grocery store runs…the uses are limitless. I’ll give you a quick story about when we used our two hard packs in a Hopper 40 soft side cooler this past weekend. We took our boat out Saturday afternoon, 13 July, around noon and it was probably around 90 degrees outside. We had the cooler loaded with plenty of beer, water and Gatorade. I made what I call a drink sandwich. I put one ice pack on the bottom, add the drinks, then another ice pack on the top, and put drinks on the top pack. We fished well into the evening and got off the water at 1130 that night. We parked the boat at my cousin’s beach house and went back to our camper. The cooler stayed in the boat overnight. We unloaded the boat Sunday morning around 11:00 and put everything in the back of the truck. We headed for home, which is about 120 miles away, but stopped about halfway home for lunch and my wife did a little shopping. That put us at getting home 4:00-4:30 Sunday afternoon. I should have been surprised, but knowing how great Cooler Shock products are, I wasn’t. The few remaining bottles of water, Gatorade and one beer was still ice cold. The hard pack on the bottom was still half frozen but the one on top wasn’t frozen, but was still cold. I just can’t tell you enough or express how GREAT this product is. I have two hard packs for now, but that is about to change. I will be ordering another set or more in the VERY near future. So, after you read this, do yourself a HUGE favor and order yourself a set of three or more. YOU WILL NOT be disappointed. You will soon find out that ice is only needed for a glass of sweet tea and not a cooler. Cooler Shock is all you will ever need to keep everything nice and cold!! Feel free to ask any questions you may have about these AWESOME and AMAZING Cooler Shock hard packs. #NoMoreIce