1. Please cover the wrap in a wet towel before heating. Place room temperature wrap evenly spread in the centre of a clean microwave turntable, not touching the sides of the oven. Ensure that any additional microwave features are turned off, such as "browning".

2. Heat in the microwave for 60 seconds (800W) or 40 seconds (1000W). If reheating, heat for an additional 15 seconds (800W) or 10 seconds (1000W). Please do not exceed 100 seconds total heating time.

3. Check to ensure temperature is suitable before application. Before reheating, check if the temperature of any part of the pack is too hot. Knead and rotate the pack to disperse heat evenly.

No - Kosi can only be heated in a regular microwave, heating by any other method will cause burns and good be hazardous.

Yes! Simply seal in the ziplock bag that comes with your heat pack and place in the freezer for at least 4 hours before use.

Ziggle is slimmer and 200g lighter, perfect for wearing under your clothes. Kosi is like wearing a big warm, puffy cloud. Ziggle's unique zig zag stitching stops the fillings from sliding down as you go about your day.

We recommend Kosi for lounging at home and Ziggle for the office. We recommend Kosi queens make use of our Bestie Bundle so Kosi is always with them when they need it ❤️

Please do not wash your Kosi, spot clean with a damp cloth only.

Many people like to purchase two Kosi’s, one to keep at home and one to keep in the office (you also get a nice discount for two!)

Kosi has a very mild earthy smell, that you will only notice when you smell it really closely.

Kosi’s shelf life is 2-3 years. Please ensure you keep in a cool, dry place to prolong its condition. For best results, store your Kosi in the zip lock plastic bag it arrived in, this will greatly improve the shelf life and ensure it is always clean and dry.

Standard shipping in Australia will take 2-5 business days, express shipping is available for an additional charge. The average time for international shipping from Australia is 15 days, however some countries might take more than 25 days. Express shipping is also available to international orders for an extra charge.

Yes! You will receive a cute Kosi carry bag with your order, to help you get it safely from A to B.

Please note that when travelling internationally, customs rules will apply. Please check the regulations for flaxseeds before your departure and find out if there is anything you need to bring along with your Kosi to ensure it is not confiscated or opened at the airport. You can reach out to us for certification if required.

Yes, we currently offer two sizes:

• Size 2XS-S: This size fits waists up to 90cm. The dimensions are 106cm x 25cm, making it slightly taller to snugly fit a smaller torso.

• Size M-2XL: This size fits waists up to 120cm. The dimensions are 125cm x 20cm, designed to fit comfortably on the widest part of your torso.

Please note that these measurements are based on your waist, so there is no need to measure your hips. The product is stretchy and may become longer over time. We recommend measuring the largest part of your tummy for the best fit. If you are between sizes, we always recommend sizing up.

We welcome all feedback on sizing to ensure we cater to all body types.

Please measure your waist and use this to help you choose the correct size for you. Measure your waist at the largest point.

We have sizing guidelines on both sizes to assist you. If you could fit either size, you should select by preference on the height of Kosi.

Some prefer more torso coverage which comes with the XS-M size, and some prefer the height of the M-2XL which will not come up as high under the bust.

Please keep your Kosi in a cool, dry place and ensure you keep it clean as Kosi can only be spot cleaned.

We recommend placing a sheet of paper towel on your microwave plate before heating to protect your heat pack. Additionally, we recommend placing a wet cloth on your Kosi during heating to assist with the heating and protect against burns.

Please ensure you always fold to heat your Kosi, with the velcro on the inside.

When not in use, we recommend keeping your Kosi in the Kosi carry bag to keep it clean.

Kosi is a traditional heat-pack, with an innovative new design. Kosi's heat retention is in line with any microwavable heat pack.

Everyone has differing skin sensitivity and heat perception. Depending on the strength of your microwave and your perception of heat, Kosi will retain a comfortable heat for 20-30 minutes.

Please note that safety guidelines for all heat packs are that they can only be safely used for periods of 20-30 minutes. Please always consult with your doctor before using Kosi for longer periods. Please refer to the safety booklet that comes with your Kosi.

When you first receive your Kosi, the flaxseed filling is fresh and has never been heated before. The heat will improve over time with reheating, and the flaxseeds will start to release flaxseed oil, providing a nice moist heat. Please ensure you add your wet cloth to your product when heating to attract the heat.

Kosi contains flaxseeds which are reported to have better heat retention, but please note that while Kosi has superior heat coverage and a more convenient design, it does not provide longer heat retention than any other traditional heat pack.

Kosi will need regular re-heating if you wish to use it for longer periods.

Yes you can order Kosi internationally by emailing info@kosi.au. You will receive a custom shipping quote which will vary by country. Please note that the customs and taxes may vary per country, and is at the discretion of the customer to research before purchasing. 

Kosi heat packs are filled with 100% flaxseeds which are already deactivated for importation. Products have been irridated by gamma ray 25KGy. Certification is available if required.

Ziggle is Kosi's lighter and slimmer cousin, ideal for wearing under clothes while you are in the office. It features unique zigzag stitching to hold the fillings in place. The OG Kosi is thicker with chunky channels, giving it the feel of a big, warm, puffy cloud—perfect for lounging around at home. We recommend keeping your Kosi at home and your Ziggle at the office so you are never caught out without your Bellies Bestie when you need it most.

Your Kosi comes with strong velcro, which allows the snug fit to your body for ultimate comfort. The edging of the velcro where it is cut and fitted to your heat pack can sometimes flake off, leaving a tiny piece of loose harmless plastic in the fabric. Please always check your Kosi before applying to your body to assure your own comfort. Simply pull out and discard any tiny piece of plastic that does come loose. This has no effect on the use and quality of your product.