I havent had them melt, but i use them for yard work and have had them for about 4-5 months, still no rips in em. I have the leather CG utility gloves for fab work, i didnt like the actual fabricator gloves. MPact and Mpact 2 for most automotive/track side work aside from the nitrile coated stretchy gloves for oil changes or greasy stuff, and fast fit tactical for shooting. Havent had any major issues with any, even my one pair of Mpacts are over a year old, index fingers and thumbs are worn open but i still use em.