They have sand filling them for the weight. My one complaint is the velcro gets easily caught on the rest of the fabric and can sometimes be difficult to pull off. Otherwise, they're weights and they're doing their job. The fabric might give way a lot sooner than anticipated, but we'll see.
Wrist And Forearm Strength Trainer - Yes4All Wrist Roller & Forearm Roller For Effective Workout - Fits 1-Inch Standard & 2-Inch Olympic Weight Plates - Wrist/Arm Blaster For Enhanced Results
41 Review
Get Fit With Yes4All 3-In-1 Premium Cast Iron Ruck Weight Plate - Choose From Multiple Weights For Effective Strength Training And Home Workouts!
43 Review
Get Fit With BangTong&Li Flat Weight Bench: The Ultimate Exercise Equipment For Your Home Gym
46 Review
Quick Release 1 Inch Barbell Clamps - Locking Collar Clips For Standard Bar Weight Plates - Ideal For Fitness Training, Weightlifting, And Bodybuilding By Greententljs
36 Review
Portzon Women'S Waist Trainer: Weight Loss, Sweat Belt, Sauna Trimmer, Tummy Toner, Lumbar Support
47 Review
Stay Comfortable And Stylish With DASUTA Sweatbands For Women And Men
55 Review
Smart bracelet Xiaomi Mi Smart Band 6 CN, black
50 Review
Foxelli Wading Boots: Lightweight, Rubber Sole Fly Fishing Shoes For Men - Grey
47 Review