Can you leave these in the freezer all the time without it being detrimental to the product?

I have owned one of these for 4 years and have kept it in the freezer the entire time without any issues

What are the dimensions of this please?

Hi Rachel. Dimensions are 28X12X1.5 cm. Hope that helps

Can you buy sleeves for these?

I don't know I made some but a large walking sock would probably work

When heated, how long does it stay warm for?

Hi in reply to you question regarding heated use of the Koolpak. The duration will depend on how long you heat it for in the first instance but I would advise not to be tempted to leave in the microwave for too long as I was as it will burst. (not a fault with the product just my own stupidity). The instruction given are quiet sufficient and I would advise that these are followed to ensure correct heating of the pack. I mention this as if you have been used to heating grain type packs it might be a temptation to heat it for too long,The instructions given advise using for just 20 mins per session and it will last well beyond that for comfort use.It should be remembered the an object heated will loose heat quicker relatively speaking compared to something that's chilled and my experience is that ice packs are more effective. This however depends on where on the body it's intended use will be and how you feel about ice packs. I found the Koolpak an excellent product and I hope this reply has been some help to you

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Koolpak 1 x Deluxe Reusable Hot and Cold Gel Pack 12cm x 29cm Ice Pack

Product ID: 47913262

Details

Age range (description)
Adult
Brand
Koolpak
Colour
Blue
Material
Nylon
Number of items
1
Package information
Pack

🌀Flexible gel molds to body

🔥Microwave-ready heat in 20s

❄️2-hour cold retention

¥4003

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Description

❄️🔥 Your all-day, all-in-one hot & cold relief sidekick!

DURABLE EVERYDAY USE - Tough nylon cover and premium gel core withstand daily freezer-to-microwave cycles without losing potency.
LONG LASTING COMFORT - Keeps therapeutic temperature for up to 2 hours—perfect for extended muscle recovery sessions.
ERGONOMIC FLEXIBILITY - 12x29cm size with a pliable gel core hugs knees, neck, back, or any sore spot like a pro masseuse.
SAFE SIMPLE APPLICATION - Soft exterior ensures comfort; just wrap in cloth and apply—no mess, no fuss, just relief.
DUAL TEMP THERAPY ON DEMAND - Freeze or microwave in seconds for instant hot or cold relief tailored to your pain.

The Koolpak Deluxe Reusable Hot and Cold Gel Pack is a versatile 12x29cm therapeutic gel pack designed for professional-grade injury recovery and muscle relief. It offers rapid heating in the microwave and long-lasting cold retention up to 2 hours, with a flexible gel core that molds comfortably to any body part. Built with a durable nylon cover, it’s engineered for repeated daily use, making it an essential wellness tool for managing inflammation, swelling, and muscle pain at home or on the go.

Specifications

ASIN	B001RXNF92
Age Range Description	Adult
Age range (description)	Adult
Benefits	Injury Recovery, Muscle Therapy, Relaxing, Relieves Inflammation, Swelling Control
Best Sellers Rank	681 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 4 in Hot & Cold Packs
Brand	Koolpak
Brand Name	Koolpak
Colour	Blue
Container Type	Pack
Country Of Origin	China
Customer Reviews	4.6 out of 5 stars 24,209 Reviews
Global Trade Identification Number	05026448000131
Item Dimensions	29 x 12 x 2 centimetres
Item Form	Pack
Item Nype Name	reusable hot cold pack
Item Volume	1
Manufacturer	Koolpak
Manufacturer Part Number	LHCM
Material Type	Nylon
Material Type Free	PVC Free
Model Name	Koolpak Deluxe Reusable Hot Cold Pack
Model Number	LHCM
Number of Items	1
Number of Packs	1
Number of items	1
Product Style	1 Pack
Size	1 Count (Pack of 1)
Special Features	Reusable
Special feature	Reusable
Target Use Body Part	Ankle, Foot, Head, Leg, Neck
Unit Count	1.0 count
Unit count	1.0 count
Use for	Ankle, Foot, Head, Leg, Neck

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¥4003

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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