<p>Ditch the disposable hand warmers and get this rechargeable model which can warm hands for up to eight hours on a single charge.</p> <p>The post <a href="https://www.popsci.com/gear/ocoopa-rechargeable-hand-warmer-deal/">Our favorite rechargeable hand warmers are just $14.99 right now on Amazon</a> appeared first on <a href="https://www.popsci.com">Popular Science</a>.</p>