[ATTENTION] Acute injuries (without much wounds), such as sports training collision, bumps and strains, sprained feet and twisted waist, apply ice within 48 hours of acute injury, do not apply heat, otherwise it will increase bleeding and swelling. And, Please Scrub the bag with brush slightly. Do not use the washing machine, in case it will be damaged by the machine. [PORTABLE SIZE] The medium 9’’ we offer is an average size and is portable for home and outdoors. It's convenient to keep the cold pack in your car, office desk, and travel bag for quick relief of annoying pain. [SAFE&Leak-proof] The cold packs can be refilled for many times either cold or warm water. Also,it is an Excellent leak resistant cap with advantaged PVC-coating design. Note: If there is water droplets outside the ice pack, that is the normal physical phenomenon, not pack leaking. [EASY TO USE] The soft refillable ice bag has simple screw-top lid which is easy to open and close, and for Cold or Heat therapy, please fill at most 2/3 of the ice pack with icy or warm water to relieve discomfort of unpleasant pain, NOTICE: Do not pour any boiling water, for your safety, water temperature range is suggested between 40-50?(104?-122?). and limit the Hot therapy time within 20 minutes. Notice: ice bag is not for any precise healthy purposes, please visit doctors if you need. [FAST RELIEF&Reusable] The reusable old fashined cloth ice bag is fit for children and teens, and the instant ice bags are the first aid for unexpected muscle aches and injuries pain in 48 hours, such as knees, teeth, neck, and shoulders aches. CAUTION: Fill the ice packs with "ice & water mixture" according to the ratio of ice and water at about 1:2-1:3, Do not put exact ice cubes into the bags for Cold therapy. And Please control your Cold-therapy between 20 to 30 minutes for one time.Best Sellers Rank: See Top 100 in Health & Household. Use for: Neck. Special Feature: Portable, Leak Proof, Reusable. Unit Count: 1.00 Count. Number of Items: 1. Brand: Fillfauw. Country of Origin: China. : B09XB6TY9N. Manufacturer: Fillfauw. Date First Available: April 27, 2022. Product Dimensions: 8.8 x 2.54 x 2.54 inches; 3.53 Ounces.