One Size for Most This weight vest for workout comes with one size which is suitable for both adult and youth, men and women. An adjustable buckle strap in front of the chest to fix the weighted vest and make the weight vest more fit body. | Soft Neoprene for Comfort The weighted vest for fitness adopts excellent neoprene fabric with quality sand filling, which is super soft and helps to concentrate the weight in the chest and upper body during training and builds core muscle strength. Cleanup Cautions: Only a dry cloth needed. Don't rinse vest in water. | Great for Strength Training The weighted vest weighs 20lbs / 9kg, which is perfect for strength training, workout, crossfit, fitness, walking, running. Men and women even wear the weight vest for stairs climbing. The weighted vest helps improve cardio conditioning and body strength, giving you more power, speed, and agility. | Mesh Pocket to Store Belongings There is a mesh pocket in the back of the weight vest for men and women to store belongings when running, walking or stair climbing. There are multi reflective tapes on both sides of the weight vest for running as well, which make the night running much safer. | Package Weighted vest x 1