It’s Your Last Chance to Get Adjustable Dumbbells (That Convert to Kettlebells!) for 38% Off on Prime Day
Prime Day 2025 ends tonight, and before it’s over, Lifehacker is sharing the best sales based on product reviews, comparisons, and price tracking tools.
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Let me ( again ) demonstrate the beauty and utility of adjustable dumbbells : no gym membership required, no waiting for equipment, and no excuses about space. While individual pairs of dumbbells in 5- to 80-pound increments would cost well over $1,500 (and take up your entire home gym), adjustable dumbbells turn an entire rack into a compact, versatile system.
So, if you’ve been waiting for the perfect time to upgrade your home gym, this is it. With just a few hours left in Amazon’s Prime Day deal, the Feierdun adjustable dumbbells are the perfect budget option, with the price marked down 38% to $79.98 for the 22-pound pair. For those serious about strength training, the 90-pound set is available for $169.98 , a savings of over $100 off the regular price of $289.99.
Compare the cost of a 90-pound adjustable set ($169.98) to buying individual fixed dumbbells—you’ll easily spend several hundred dollars more for the same weight range.
Having tested several brands and models, I’m particularly impressed with how the Feierdun system goes beyond traditional adjustable dumbbells by combining four different pieces of equipment into one. You can use them as fixed bars, kettlebells, traditional dumbbells, or individual weight plates. So you can do kettlebell swings and goblet squats without buying separate equipment? What a find.
While their manual adjustment system may seem outdated compared to quick-adjust mechanisms, it has distinct advantages. You manually screw and unscrew the desired weights and connectors, which provides a more secure connection than some quick-adjust systems. The safety nuts should hold the dumbbells securely in place, preventing the annoying weight shifting or rattling that can occur with lower-quality adjustment systems. After all, when handling heavy weights, especially during dynamic movements, you want absolute confidence that the equipment is in good working order.
That said, if you want a quick-adjust mechanism, Feierdun is offering a 15% discount on the dial system on rush day, down to $329.99 . Or, if you’re willing to spend a little more, my favorite adjustable dumbbells are the Nuobells , which are currently on a small 6% discount, bringing the price down to $590 . And if you’re a beginner and don’t need dumbbells heavier than 10 pounds, I recommend the Merach set, which is currently on 15% off for just $43.31 .
Once you’ve got the dumbbells you like, check out my 15-minute adjustable dumbbell workout, designed specifically for runners who are pressed for time like me. For more, check out all the best fitness equipment deals that are only available for a few hours.
Looking for something different? Retailers like Walmart, Best Buy, and Home Depot are running Prime Day sales that are especially helpful if you don’t have an Amazon Prime subscription.
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Walmart’s Prime Day sale runs through Sunday, July 13, and includes discounts of up to 50% . It’s an especially great deal for those with a Walmart+ membership.
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Best Buy’s Prime Day sale , Black Friday in July, runs through Sunday, July 13, and is one of the best tech deals online . It’s an especially good deal for My Best Buy Plus or Total members.