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❄️ Chill smarter, adventure longer — don’t let your cooler miss out!
Cooler Shock Reusable Ice Packs deliver long-lasting cold retention (24-48 hours) with a phase change temperature of 18°F. Sized at a versatile 10x10 inches, each pack replaces 3 pounds of traditional ice, maximizing cooler space. Made with durable nylon reinforcement and including a funnel for easy filling, these reusable packs are perfect for camping, fishing, road trips, and beach days—trusted by thousands with a 4.6-star rating.














| ASIN | B0773FVRZY |
| Best Sellers Rank | #179 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #6 in Camping Cooler Accessories |
| Brand Name | Cooler Shock |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (12,071) |
| Date First Available | January 8, 2016 |
| Included Components | Cork, Funnel |
| Item Dimensions LxWxH | 10 x 1 x 10 inches |
| Item Package Dimensions L x W x H | 11.22 x 7.44 x 2.64 inches |
| Item Weight | 12 ounces |
| Manufacturer | GenTap |
| Material | Add Water |
| Number of Items | 4 |
| Package Weight | 0.47 kg |
| Part Number | CS MID Screw Cap … |
| Size | All Purpose Size 4-Pack |
| Style | Medium - 4pk |
H**E
Omg these things are so cold, it hurts to touch them!
I recently took my full size refrigerator out of my business, but still wanted to get my Amazon fresh groceries delivered at work, since my home isn't in the delivery range. That also means the food is already thawing for an hour before it gets delivered. So, I needed better cooler bags and reusable ice packs that could stay cold for 10 hours before getting the food delivered, and then hold up for another few hours before getting the food home (another 3-4 hours, so the ice stayed mostly frozen for almost 14 hours in these bags). I bought these ice packs after reviewing every product on Amazon, and I got the Titan insulated bags. I avoided ordering things like ice cream or frozen waffles, because I've noticed those don't arrive frozen by the time they deliver the groceries. I mainly ordered frozen meals, mini pizzas and refrigerated stuff. The food was still frozen when I got home! The only thing that thawed were some frozen french toast sticks (I took stuff like that out of their boxes because I figured it would help keep them cold better if they had direct contact to the ice). The refrigerated stuff was plenty cold still too. These ice packs get so cold that it almost burns your hand to touch them. They stay cold for a lot longer than my thin blue ice packs of various brands. They freeze in a nice thin shape, seem to have excellent build quality, and are a great size. I wanted more small ice packs rather than one large one so I could make sure all of the food had ice on almost all sides of it. They actually weigh quiet a bit, which is probably why they can stay frozen longer than the cheaper ice packs that I have. I was really hesitant at first to get these because of the cost, and having to fill them with water myself, but I am so happy that I did! They were easy to set up and do a great job. We actually have power outages pretty regularly and I feel more confident that my frozen food will stay frozen longer with these in the freezer. When you are squeezing the air out of the pouch, after adding water, you can see the material inside the pouch is a light blue color. After it sets for a few minutes it becomes gel inside. So far only the edges thaw out after 14 hours of use. And it does seem to help if they have a full 24 hours to re-freze after use (as opposed to 12).
A**G
So worth the set-up time and effort!
These were purchased to fit in the 16 quart Coleman hard-sided cooler. They fit perfectly. I put one on the bottom and one on top. I purchased the lunch sizes for the sides. Once the set-up is done, and they are frozen, they are easy to use and keep your cooler COLD! They work well! SET-UP: you have to fill them up with a specific amount of water. You need to use the funnel (comes with one) to fill them up. You should measure out the correct amount of water to fill them, but I have filled these in other sizes and once you've done it enough times you know about when to stop. If you aren't experienced with when to stop, then definitely measure out what you need so you have enough in there and don't overfill. Once they are filled with water, you squeeze a stopper in the top and close it tight all the way. The stopper can be difficult to push in, but make sure it's down as far as you can get it before trying to put on the cap. Then put them in the freezer FLAT. Unless you are looking to purposely shape them, keep them flat for best use once frozen. They were frozen by next morning and ready to go. USE: I put two of these and two lunch size in a hard-sided cooler and they kept the items cold for 36 hours. Impressive. They were about half to 2/3rds melted when I put them back in the freezer, flat again, and then next morning, again they were ready to use. TIPS: 1. If you have an extra freezer in your basement or garage, I would keep these in various sizes in there for use in coolers. I also have the largest size that I put in a big Trader Joes soft sided cooler bag for car trips as well. I have packed groceries in and drove 7 hours and popped them in the fridge when got to destination and everything was fridge cold still. 2. If you have a better funnel, use that. The one it comes with is small and flimsy, but works. PROS: THEY WORK!! Enough said! Worth the price - which is decent - and effort to set up! Save you money on purchasing food on the road. Have healthy foods from home without the restaurant, convenience store up charge! CONS: You have to put in a little work to get them "made" and they need to go into the freezer for 24 hours (will be ready in less if needed but plan on at least 24), so don't buy these last minute. Prepare for their use. They can take up room in your freezer and get in the way, so best if you have a separate extra freezer to store them in.
T**.
Very cold and large ice pack for any need you may have.
Very very cold ice packs. Definitely colder than lots of other ice pack variants out there. The material is solid and the instructions are very easy. They are easy to fill and freeze. These are the large ones, possibly larger than you may need, larger than you have space for in the freezer but excellent nonetheless. They are barely thicker than a normal ice pack and weigh just about the amount of water you put in them. Shockingly cold and easy to shape into a nicer shape if you prefer that when refreezing. Even after melting, they are cold enough to use! Very nice.
X**3
Great cooler icepacks
Compact, durable and extremely cold. Good price. Highly recommended.
W**G
Great for keeping meds cool, stay frozen for flights
Technically speaking, I'm not convinced these packs would be capable of keeping things chilled for a full 48 hours. BUT they do say 24-48 hours, so I'm not deducting a star for that reason. I recently purchased these and used 2 in combination in an icemule jaunt to take refrigerated medication on a long flight followed by a drive before we'd reach refrigeration again. All told, I needed something could 1) stay frozen through TSA, and 2) keep my meds cool for 18 hours+. This system worked perfectly! All of my meds remained perfectly cold. The packs were slushy after 18 hours (including 90 degree temps for a few of those hours, BTW), but still plenty cold. Throughout our trip, we'd just pop the packs in the freezer of whatever rental we were in to have them ready for the next day. They worked reliably, including during long road trips in 90 degree weather. We only had one hiccup along the way when a hotel's minibar fridge/freezer apparently wasn't cold enough to refreeze them. Luckily, their kitchen agreed to pop them in their freezer while we were out sightseeing for a bit. We were back 3 hours later and had partially frozen packs--they do freeze pretty quickly. Our return flight was delayed, we missed our shuttle, etc, yet we still returned home with cold med in hand. Though I never had an issue with my meds freezing while next to the packs, others have mentioned it could happen. Twice when on longer road trips from one location to the next, our ground beef actually froze when between the packs! So, do take care if this is a concern. We've had to travel with refrigerated meds in the past, and these packs in combo with the icemule were by far the best system and most reliable. Won't hesitate to use them again!
R**S
RN Mom Tested: Slim Ice Packs That Stay Cold All Shift Long
I’ve been using these ice packs for about 3 months, and they’ve been holding up extremely well. The quality is impressive, and once prepared correctly, they work exactly as advertised. Important tip: Make sure to follow the directions closely. These do not work immediately. The instructions state to freeze the packs for at least 8 hours before use, which is necessary for best performance. I work at a hospital and pump breast milk during my shifts, so keeping my milk cold is non-negotiable. These ice packs keep everything ice cold for over 12 hours, which honestly impressed me. The night before work, I freeze two medium-sized packs, then place them in my cooler bag in the morning. I lay them flat while freezing so they are pretty slim, which makes it easy to stand them upright in my cooler later. The packs are very slim and space-saving, which I love—but be aware that the corners are quite sharp, so handle them carefully. The bag itself looks sleek with its black color and feels very high quality and durable. As for setup: the directions are clear, but the process is a bit particular. I’ll admit I had my husband help me because precision matters here. One key step is measuring 28 oz of water and letting it sit for a few minutes to release air bubbles (this is important!). You pour the water in using the included funnel, do not add the silicone plug yet, close the screw cap, and shake vigorously to mix the contents. Then you remove the cap again and gently squeeze out excess air before sealing it completely. If you carefully follow the instructions, you’ll be totally fine. Overall, these ice packs are reliable, long-lasting, and well-designed. I plan to purchase a larger size for our big cooler for beach trips. Highly recommended for working parents, breast milk storage, travel, or anyone who needs serious cooling power.
R**S
Colder than ice
I received them recently and still waiting to use them. I can’t say about how long they stay cold under extreme conditions like the hot and humidity on the tennis court at midday 😬 but I can say is colder than ice. So much colder! I laid them flat and left them in the freezer 24 hours. They are solid like rock and extremely cold. I am looking forward to using them this weekend. I’ll update my review soon.
E**A
Excellent freezer packs - very limited life time
I absolutely love these freezer packs. They are easy to use and versatile, and they are so cold if you're not careful, they will freeze items in your cooler solid. I am sad to report their lifespan is very limited. I purchased these in 2023, and used them for three summer/fall camping seasons. We are heavy campers, frequently going on trips twice a month. I was sad to find these were all oozing when I pulled them out to prep for this year's first trip. The corners appear to be very weak and prone to cracking open. That being said, they are still much less than the cost of three summers worth of ice. If you don't mind that you'll have to replace them, they're a good buy. I just wish they were more durable. I'm going to try the companies hardshell freezer pack option next time.
チ**カ
大きい
水を適量計って入れる作業が要るが特に困る事は無い。 ただ大きさをわかっていたつもりが想像より大きく 分厚さもあるため手持ちのクーラーボックスではそのままでは使えずに 凍らす時に折り曲げている。 Mを4つ買ったがMは一つでSを複数の方が良かったかもしれない。 まだ2つしか使っていないので残りは予冷用に使う事も考えたが 家庭用冷凍庫の場所にも限りがあるのでキャンプ前に容量に余裕のある時限定かも。 勿体無いが友人に使ってもらう事も考えよう。 用途は一泊のキャンプなので翌朝の食材も冷えたまま保存できて問題なし。 25Lくらいのボックスなら一つを曲げて入れるくらいかな 二つだと容量がかなり減ります。 ソロでM4つは多すぎです。
A**T
Gute Kühlleistung, empfindliche Beutel
An und für sich eine gute Kühlleistung, allerdings ist einer der 4 Beutel ohne Gewalteinwirkung in der ersten Woche der Verwendung direkt unterhalb des Drehknaufs gerissen und damit unbrauchbar. Bei dem Preis meiner Meinung nach nicht akzeptabel. Mein Fazit daher: Grundsätzlich gut, aber scheinbar sehr fragil, womit es für den Einsatz in der Kühlbox in Anbetracht des Preises zu Riskant ist. Würde ich mit diesem Wissen nicht wieder kaufen.
M**O
Molto caro
Molto caro per quello che fa . Mi aspettavo prestazioni differenti da prodotti simili che già avevo e che fanno lo stesso lavoro . Non vale la differenza di prezzo .
A**N
je trouve pas trop ce produit interessant
je trouve ce prdoduit pas trop interessant par raport a un bloc tient de la place une fois congele
N**R
Brilliant
Brilliant
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