FEIERDUN Lynx 5 in 1 Adjustable Dumbbell Weight Set
FEIERDUN Lynx 5 in 1 Adjustable Dumbbell Weight Set
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$149.00 USD
USD5 in 1 Multifunctional Adjustable Dumbbell Set
Easy to switch, eco-friendly, and durable for the whole family


Flexible and Multi-purpose
5-in-1 Interchangeable free weights system can be used as a barbell, kettlebell, single weight plate, two dumbbells, or push-up handles. Dumbbell pieces are detachable, allowing for easy switching between different forms to satisfy your workout preferences.

More Weight Options for the Whole Family
Dumbbell pieces in each set can be combined as needed. It holds up to 4 weight plates as a kettlebell and 6 as a dumbbell, allowing for different pounds. Suitable for everyone from beginners to professionals, this single set of equipment meets varying workout intensity needs at various stages.

Eco-friendly and Space Saving
Dumbbell pieces' exterior is made of high-quality PE materials, and the inside is mixed with iron, sand, and cement, which effectively prevents floor abrasion. No rust and durable against drops. Additionally, they require less than 0.2㎡ for storage. Please use it with confidence!
Product Features

Dumbbell Grip
The surface of the dumbbell bar is attached with a diamond texture, which effectively fits the hand and helps you to better control the dumbbell during exercise.

Safety Nuts
The sets contain four safety nuts. Nut thread thickening effectively keeps the dumbbell piece solid, to prevent movement shaking.

Dumbbell Pieces
Their inner diameter is 1", and the thickness is consistent. As the weight increases, the diameter increases.

Non-slip Kettlebell Handle
With a grain texture, it increases friction between the hand and the grip when in use.

Barbell Connecting Rod
It's made of a 5mm thick steel tube + 20mm thick high-quality foam. The curved design fits the neck, which is non-slip and sweat-absorbing, soft and breathable, bringing a more comfortable exercise experience to you.

Earfortless Assemble
You can use it right after unpacking. It comes with a detailed manual and allows you to easily switch between dumbbell, kettlebell, and barbell. It also includes a training guide, advancing your fitness journey more effectively.


- Product Dimensions 22.8"Lx12"W(45lbs), 24"Lx12.2"W(70lbs), 22.45"Lx12.6"W(90lbs)
- Kettlebell Handle(Push Up Handle) 7.8"W, 5.5"H
- Barbell Connecting Rod Length(single) 460mm(45lbs); 560mm(70lbs/90lbs)
- Kettlebell Base 3.9" W, 9" L
- Weight Plate Sets(4 each) 45lbs: 2.5lb,3.5lb,4.5lb; 70lbs: 2.5lb,3.5lb,4.5lb,6.5lb; 90lbs: 2.5lb,5lb,6.5lb,7lb
- Material High-quality PE, Alloy Steel, High Density Foam
- Accessories Fixed Nut*4; Dmbbell Bar*2; Barbell Connecting*1; Kettlebell Handle*2; Kettlebell Base Rod*1
- Usage Dumbbell, Barbell, Kettlebell, Weight plate, Push up Stand
What is the maximum weight of a kettlebell?
You can make your own weight; about 5-6 weights fit on it at once, depending on what weights you put on it.
What size is the hole in the weight plate?
The hole measures 1 inch.
What is its adjustment mechanism?
It features a simple twist-lock design for quick weight changes.
Do you offer additional weights individually?
No, please reach out to our customer service for more information.
Are the screw nuts and bars plastic or steel?
Nuts are made from high-quality PE, while the bar consists of high-quality PE and alloy steel.
Is this suitable for someone just starting out?
Yes, it’s ideal for beginners to intermediate users seeking versatile workout options.
What should I do if the dumbbell arrives damaged or with missing parts?
Please contact customer service immediately and provide photos of the damage or missing parts. They will assist you with a replacement or refund.
I originally ordered this item June 2024 - the Kettlebell Base Rod was dropped while we were moving and cracked. I contacted the seller, not expecting them to answer or provide any help in replacing the broken part, but I was pleasantly surprised that they quickly responded. Shipped the replacement part without hassle and within just a few days - excellent service and the original purchase has been a great help in my fitness journey. 5 stars.
Wish this came with two of the bases for the kettle bells, but otherwise this is a solid Set! I’d definitely recommend some type of organization system for this set, but it’s as expected quality-wise. Sometimes the spindles that keep the weights in place come loose, but it’s never happened during a lifting set. I usually just adjust between exercises. Easy to switch between equipment, and the price was fair.