<ul><li>MATERIAL: made of high quality PVC material, more durable & longer lasting insulation.</li><li>Leakproof: Hot water bags have passed 24 hours of explosion-proof and leak-proof test before leaving factory.</li><li>Cold and Hot Use: Hot water bottle can be used alone as a remedy for aches, pains and sports injuries.</li><li>How to Use: First open the cap, then fill two-thirds of 80 degrees of water into the rubber water bottle. Finally, tighten the cap and turn the warm water bag upside down to check for leaks.</li><li>Package: 2 Pack 2L Thickened Leakproof Hot Water Bags.</li></ul> Use Instruction: 1. If the hot water bag has a smell, please wash it before using the hot water bag. 2. First open the cap, then fill two-thirds of 80 degrees of water into the rubber water bottle. Finally, tighten the cap and turn the warm water bag upside down to check for leaks.

HPWFHPLF Hot Water Bottles, 2 Pack 2L Thickened Leakproof Hot Water Bag for Pain Relief, Cute Hand Feet Warmer, Cold and Hot Use (Blue+Purple)