UST Reusable Handwarmer (4 Pack)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Provides up to two hours of heat </span></li><li><span class="a-list-item"> Heats up to 130 degree F (54 degree C) in just 15 seconds </span></li><li><span class="a-list-item"> Sodium acetate and water are activated by bending a metal disk inside the pouch </span></li><li><span class="a-list-item"> When heat runs out， warmer can be rejuvenated with boiling water </span></li><li><span class="a-list-item"> Environmentally friendly </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41FY04g3%2BaL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51vajhuTagL.jpg" noproxy>