Crafted with 20 years of professional fitness equipment manufacturing experience, the 2026 Newly Upgraded Flybird Adjustable Dumbbell is developed under guidance from professional coaches to fit diverse strength training needs. This all-in-one dumbbell set integrates 5 weight options: 15lbs, 25lbs, 35lbs, 45lbs and 55lbs, perfectly replacing 10 traditional single dumbbells to cover beginner to advanced workout intensities for targeted muscle training. Featuring one-handed quick rotation design, it enables fast weight switching to streamline your workout rhythm and boost training efficiency. Built with an exclusive 8-point safety locking structure, it firmly secures weight plates and prevents loosening or falling during high-intensity exercise. Paired with a thickened high-strength storage tray, it keeps your workout area neat while protecting the floor, saving 80% storage space and 35% cost compared with buying multiple fixed-weight dumbbells, ideal for home gym and small fitness spaces. Product Note: This is a pair of adjustable dumbbells with a total maximum weight of 110LBS (55LBS per dumbbell). The item will be delivered in 2 separate packages.