Core Tri-Sectional Dual Comfort Hot and Cold Pack 11” x 15"

There are two very similar Tri-Sectional CorPak products for neck and shoulders:Soft Comfort CorPak, Core Products Item #554 andDual Comfort CorPak, Core Products Item #534I thought I should let you know the difference...The Soft Comfort CorPak 554 is the same light blue material on both sides and does not include a strapping system.The Dual Comfort CorPak 535 is that same light blue material on one side, but a dark blue velour material on the other. It also has a strap, which is elastic with velcro on each end. The velcro will stick to anywhere on the dark blue velour side of the Dual Comfort CorPak. So you can wear it like a harness and walk around with it.I ended up buying one of each. And they both work great. I'm going to keep the Soft Comfort CorPak (554) in the freezer and the Dual Comfort CorPak (534) at room temperature so it's ready for heating. That way I can alternate between hot and cold therapy easily. When I use cold therapy, I tend to stay in one place, so I won't need the strap. When I use hot therapy, I can use the strap and move around.

Instructions said to store in freezer, it is very cold after it has been in there for several hours. Quickly and easily stops the muscle spasms on my shoulders. It is a little heavy to wear if one is standing or sitting. The best position I have found is to have your head and upper torso slightly elevated. If iyou have a bed that raises, you can lie on the colpak and the pressure will help the cooling. The weight will prevent the coldpak from sliding around. It weighs 5 lbs. I weighed it. Online description said it weighs 1 lb., but mine weighs 5. This is about the right weight to keep it in place without straps. I bought the colpak that doens't have the straps. Not needed. The two end flaps will stay on top of my shoulders and the middle one will be in the "up" position for the cervical spine. It is a quality product. The blue covering on both sides eppears to be strong, sturdy and durable. Enjoy!

This is a helpful cold pack because it's hard to get a cold pack to stay put in the upper back and shoulders. This one stays cold for longer than most of my other cold packs, probably because it is thicker. I gave it a 4 out of 5 rating because it's so heavy that it gets uncomfortable after a few minutes. For small women, the weight of this on your shoulders may itself cause mild shoulder strain. I usually take it off because the weight was bothering me, not because it was no longer cold. I admit to having relatively low upper body strength, and maybe I should have used this more to strengthen my neck and upper back muscles. But I wouldn't buy it again because of the weight.

This was shipped and delivered in a very timely manner. There were two problems though. First, it was not wide enough. I needed something that comes down on both sides to cover the rotator cuffs and joints. Good for the scapular area and neck, but that is not what I need. Secondly, there were no instructions as to how to use the Velcro tipped straps. I never did figure out how to use strap and neither did my husband who was helping me. If this would have been wider, I probably would have kept it. Amazon makes it extremely easy to return and I am very appreciative of that.

I bought this product because I was diagnosed with snapping scapula syndrome and needed to ice at night to relax the muscles to fall asleep. I have used it over a month and it worked like I hope, BUT something happened with the blue color that royally made me super mad. My wife used it for the first time last night for her self because she was feeling sick and when she woke up she noticed the blue from the ice pack had bleed through our expensive pillow case, pillow, expensive sheet, and worst of all the super expensive mattress cover for our new bed. I spent all day yesterday stain spraying and washing them all and yet no luck getting the blue out... I'm so mad about sending extra money on a large ice pack to make things easier and now it's going to cost me almost $250+ in replacing blue stained bedding...If you ever plan I buying this to use beware, don't let out ruin your bedding, clothes, or even having blue dye on your skin... Not worth it

I am a medical transcriptionist. I spend long hours at my computer and I often get neck and shoulder pain, even with the most ergonomic setup. I have this item and keep it in the fridge for those painful days. The best thing about it is that I can have it on and stay sitting up and keep on working while I ice my neck and shoulders! It totally stays on just like in the photo. I rotate this with that wonderful Sunbeam heating pad that is specially designed for the neck and shoulders. A total winning combination. This thing stays cold for a very long time, as well.

I was so happy to order a Gel Pack with a strap, but it is a farce. The strap is not attached to the gel pack, it is crookedly sewn so you have to have a twist it in to attach and basically does not work. The strap and the pack fall off my back, does not work like in the picture. The pack is thick and heavy. If you use it by lying down on the bed or back in a chair, then it works. But that is not what I wanted. I needed a pack that stayed on my upper back & neck with the strap will I am working at the computer. So don't buy this one if you want to attach it as in the picture.

The best item since sliced bread. I have it on in the morning before I leave to alleviate pain. I can do anything, ie. brush teeth, walk around and make coffee with it on me1. Place gel pack on shoulders with dark blue side up2. Velcro one end of the strap to right front leaf of the pack3. The other end of the strap goes under right armpit,around your back and through the left armpit to the front.4. This end of the strap velcros to the front of the left leaf of the gel pack. There is only two front leaves.(Seems obvious, but)It will feel like you have a backpack on you. You can do this vise versa, just be consistent.Hope you enjoy it as much as I have!