Freezing gel for a long lasting cool! Insulated aluminum sheet ● Freezing gel bags and insulated aluminum sheets keep cold longer. The cover is made of fabric with insulation (urethane) that gently cools your neck. The insulated aluminum sheet prevents cold air from escaping and maintains a cool feeling. The frozen gel bag is divided into 4 sections, so it fits around the neck. Easy to install as it is fixed just through the hole. (Can be fastened in 3 different positions) The cover surface is made of pile fabric that is gentle to the touch. Keep it in the freezer at all times, so you can use it again and again. For gardening, household chores, sports, and leisure. (Ingredients/Materials) Cover: Cotton, polyester, urethane foam gel bag: Water, polymer absorbent resin, polyethylene insulation aluminum sheet: polyester (vapor-deposited aluminum), foam polyethylene, (Product Size) Body (including cover): W 27.2 x H 3.1 x D 1.0 inches (690 x 80 x 25 mm); Weight: 7.9 oz (225 g); How to use: (1) Insert the insulated aluminum sheet in the cover. (It is first in the cover. Insert the cover firmly into the cover so it does not protrude from the opening. (2) Separate the gel bag and cover (with aluminum sheet) in the freezer for about 4 hours or more. (until the gel completely freezes) *Place the cover in a plastic bag or other similar to allow it to cool. The gel bag should be flat or folded in half to cool. The snoring shape may cause bursting if cooled. (3) Put the cold gel bag into the cover. (4) Apply to the area you want to cool. Pass through the hole to fix it. Note: The contents of the gel bag cannot be eaten. If you eat the contents, please bring this product and package to consult a physician. Please be careful not to get the tip of the cover caught in a machine, etc. Please do not use it while sleeping. It may cause neck pain. If you experience any abnormalities during use, stop using and consult a physician. Please rinse with water if the gel bag gets in your eyes or on your skin. If you experience any abnormalities, stop using and consult a physician. Please consult a physician before using if you have cardiovascular diseases (hypertension, hypotension, narrow, etc.). Please do not impact the gel bag or expose it to sharp objects. The strength of the gel bag may decrease after prolonged use. Discontinue use if the gel bag has decreased elasticity or cracks. When washing the cover, remove the gel bag and aluminum sheet and use a net. ·This product is designed to maintain a moderate temperature, so it is difficult to feel cold suddenly. The cold retention time may differ depending on the outside temperature and body temperature. When disposing, please follow the regulations of each local municipal government. ·The color of the cover may differ from the time of manufacture.