Manufactured with good quality material which is durable for long lasting use. Through long-term wear and exercise, they can improve slack and bent sagging arms. They can stabilize the muscles and tendons of the upper arm and helps reduce swelling. They will help increase burning of calories, allowing you to have the perfect thin arm faster. Suitable for running, swimming, yoga, playing basketball, baseball, volleyball and other sports use. Features -Material: Rubber. -Size: About 45.00X14.50X0.50cm / 17.68X5.70X0.20inch. -Manufactured with good quality material which is durable for long lasting use. -Through long-term wear and exercise, they can improve slack and bent sagging arms. -They can stabilize the muscles and tendons of the upper arm and helps reduce swelling. -They will help increase burning of calories, allowing you to have the perfect thin arm faster. -Suitable for running, swimming, yoga, playing basketball, baseball, volleyball and other sports use.