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Even the fittest celebrities deal with obstacles in their workout routines. Although Courteney Cox is happy to show off her tennis skills and sweaty boxing sessions on instagram, even she deals with joint pain. In a sketch posted last week, the Friends star compares the days she was always ready for a tennis match with her current struggle of having to prep her knees for the court, and in doing so, shouts out a compression sleeve shoppers call "a life saver."

A favorite of Gwenyth Paltrow (who's a brand partner), the Copper Fit Ice Knee Compression Sleeve (Buy It, $15, was $20, amazon.com) ticks all the boxes needed for ultra-supportive joint protection: sturdy knit material that contours seamlessly to the knee, a compressive fit for improved circulation, and a tube shape that can easily be slid on and off.

What's earned this piece of gear more than 10,000 perfect ratings is its cooling technology. CoQ10, a naturally occurring antioxidant, and menthol release a cold sensation across the knee that becomes stronger "as you move," , according to the brand. Like an ice pack on sore muscles, this chilling feature reduces swelling and pain, allowing you to go through your workout ache-free.

Buy It: Copper Fit Ice Knee Compression Sleeve, $15, was $20, amazon.com

Best of all, so many reviewers say this compression sleeve has helped them work out without knee pain. "I've been wearing it for about a week now and swear by this," wrote one user, who added that they've even "started running again," after months of pain. Another shopper who suffers from arthritis said it gave them "tremendous support and instant relief." If distance is what you're after, a third reviewer noted that the sleeve "makes it possible to walk at least eight miles a day." (BTW: These editor-loved cross training sneakers are also great for eliminating knee pain.)

If knee pain is keeping you off the tennis court (or wherever your go-to spot is for some good cardio) this celeb-inspired hack is worth checking out. Shop it on Amazon while it's on sale for just $15.