Hyperwear Hyper Vest PRO: Ultra Thin Adjustable Weight with Patented Comfort Stretch for Enhanced Fitness Training Unisex Fit, Small Steel Weights (9kg LG)

No-Bounce Compression Fit for Running and HIIT — USA-made Xyflex stretch fabric locks weight to your body with zero vertical shift during sprints, burpees, and dynamic training. Moves with you, not against. 20 lb USA steel weights included. Precision Steel Micro-Weights for Progressive Overload — Each 2.25 oz galvanized steel weight slides in and out for fine-tuned resistance adjustments. Start light and build gradually across hundreds of configurations. Expandable Capacity Up to 40 lbs for Advanced Training — More weight pockets than the ELITE model. Max loads by size: Small 20 lb, Medium 25 lb, Large 30 lb, X-Large 40 lb. Built for functional fitness, bodyweight workouts, and strength training. Adjustable Unisex Fit with Side-Lacing System — YKK front zipper and adjustable side lacing dial in a tailored compression fit for men and women. Slim and comfortable to wear over or under clothes for discreet everyday calorie burn for weight loss. Research-Backed and Machine Washable — Trusted in multiple research studies including speed training, osteoporosis, weight loss, muscle building and for weight-bearing exercise. Remove weights, machine wash cold, air dry. Built for daily use.