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Gel ice packs: what is in them and how to pick a good one
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- Reusable soft gel ice pack with fabric cover. Best for: An all purpose pack for most aches and bumps. See options on Amazon
- Gel bead ice pack. Best for: Wrists, ankles, elbows and other small joints. See options on Amazon
- Large flexible gel pack for back and thigh. Best for: Big muscle areas like the lower back or thigh. See options on Amazon
- Small gel packs, multi pack. Best for: Families, lunch box first aid and quick bumps. See options on Amazon
What is inside a gel ice pack
Poison Control (the National Capital Poison Center) explains that reusable ice packs typically contain water, something to lower the freezing temperature, a thickening agent, and silica gel, often with a non-toxic blue coloring. The freezing point lowering ingredient is usually propylene glycol. Some packs use gel beads made of sodium polyacrylate instead.
That mix is what lets the pack bend around a knee or wrist while ice cubes would sit rigid. It also means the contents are not something to swallow. Poison Control says a small taste of propylene glycol typically causes only mild irritation, but large amounts can cause serious drowsiness. Early reusable packs that contained diethylene glycol or ethylene glycol have been recalled.
How to choose a gel ice pack
- Size for the job. Small packs suit a wrist, ankle or face. Large packs suit a back, thigh or shoulder. A pack that is too small means moving it around.
- Soft when frozen. Look for a pack described as flexible straight from the freezer. It will mold to a joint instead of resting on one point.
- Thick outer film and sealed edges. Leaks are the main failure. A sturdy pouch and welded seams last longer.
- A fabric cover or sleeve. Cleveland Clinic says never to put an ice or cold pack directly on your skin and to wrap it in a towel or cloth. A cover does this for you.
- Straps for joints. If you are icing a knee, shoulder or ankle, a wrap with straps frees your hands.
Gel pack types compared
| Type | Fits best | Trade-off |
|---|---|---|
| Soft gel pouch | General use on most body parts | Needs a separate cloth or cover |
| Gel bead pack | Molding closely around small joints | Beads can feel lumpy through thin fabric |
| Gel wrap with straps | Knees, shoulders, ankles | Shaped for one area |
| Hot and cold gel pack | People who switch between ice and warmth | Heating needs care to avoid burns |
For joint specific shapes, see our ice pack for knee and shoulder ice pack guides. If you would rather make one, read our homemade ice pack guide.
How long to keep a gel pack on
Gel packs need time limits just like ice. Gloucestershire Hospitals NHS Foundation Trust gives these limits: up to 20 minutes on a large muscular area such as the thigh, and 10 to 15 minutes on a small bony area such as the ankle. It says to check the skin under the pack every 5 minutes for blueness, blotchy and painful skin, or too much numbness, and to remove the pack straight away if you see any of these.
The Aneurin Bevan University Health Board guidance on using ice safely, which lists gel packs from the freezer as one option, is more cautious: up to 10 minutes, 2 to 3 times a day, wrapped in a damp tea towel.
Who should not use a gel ice pack
The Aneurin Bevan guidance says not to use ice packs:
- If you have poor sensation or over skin that is numb, especially with diabetes
- Over areas with known poor circulation, or if you have Raynaud's disease
- If you are hypersensitive to cold
- Over broken skin or wounds, or where there is infection
Gloucestershire Hospitals adds that ice packs can be used for children's injuries, but only under supervision and for reduced times.
Leaks, kids and pets
- Check the pack before each use. Throw it out if it is torn or sticky.
- If gel gets on skin, Poison Control advises washing right away with soap and water. If it gets in the eyes, rinse with room temperature water for 15 minutes.
- If someone swallows some, Poison Control suggests rinsing the mouth and taking a few sips of water, then using its online tool or calling 1-800-222-1222.
- Store packs in the freezer away from food children might grab, and keep chewed or punctured packs away from pets.
What to look for when you buy
Reusable soft gel ice pack with fabric cover
Best for: An all purpose pack for most aches and bumps
A cover keeps the cloth layer Cleveland Clinic recommends between the gel and your skin, and soft gel bends to fit most areas.
Watch out: Check the seams before each use and replace the pack if it leaks.
See options on AmazonGel bead ice pack
Best for: Wrists, ankles, elbows and other small joints
Beads shift to fill gaps around small joints, and Poison Control notes these beads are usually sodium polyacrylate, a common bead pack filling.
Watch out: Keep it away from children and pets who might chew it open.
See options on AmazonLarge flexible gel pack for back and thigh
Best for: Big muscle areas like the lower back or thigh
Gloucestershire Hospitals allows up to 20 minutes on large muscular areas, and a large pack covers the whole area at once.
Watch out: Check your skin every 5 minutes, even if the pack feels only mildly cold.
See options on AmazonSmall gel packs, multi pack
Best for: Families, lunch box first aid and quick bumps
Small packs suit small bony areas, where Gloucestershire Hospitals suggests a shorter 10 to 15 minute session.
Watch out: Children should only use them with an adult watching and for shorter times.
See options on AmazonQuestions people ask
- What is the gel in an ice pack made of?
- Poison Control says reusable packs usually contain water, a freezing point lowering ingredient (usually propylene glycol), a thickener and silica gel. Some use sodium polyacrylate beads.
- Is gel ice pack liquid toxic?
- Poison Control says a small taste usually causes only mild irritation, but large amounts can be harmful. Call 1-800-222-1222 or use its online tool if someone swallows some.
- Are gel ice packs better than ice?
- They are easier to shape and do not drip. Real ice in a bag also works well. Either way, use a cloth barrier and time limits.
- Can I put a gel ice pack straight on my skin?
- No. Cleveland Clinic says never to put an ice or cold pack directly on your skin, because it can cause a cold burn within minutes.
- How long can I leave a gel ice pack on?
- Gloucestershire Hospitals suggests up to 20 minutes on large muscles and 10 to 15 minutes on small bony areas, checking your skin every 5 minutes.
Sources
- What's inside an ice pack? (poison.org), Poison Control (National Capital Poison Center)
- Ice and heat treatment (gloshospitals.nhs.uk), Gloucestershire Hospitals NHS Foundation Trust
- Using Ice Safely (movebettergwent.nhs.wales), Aneurin Bevan University Health Board (NHS Wales)
- Ice Burns (my.clevelandclinic.org), Cleveland Clinic