Retail price: 2,970 yen There are two without packaging, so if you buy two together, it's a great deal at 4,500 yen. UA GAME DAY ARMOUR SLEEVE with impact protection pads, L/XL size, white. - Brand: UNDER ARMOUR - Model Name: UA GAME DAY ARMOUR SLEEVE - Size: L/XL - Color: White - Features: With impact protection pads Thank you for viewing. Arm sleeves are now worn by nearly 40% of NBA players, including LeBron and Hachimura. During basketball, the internal pressure of the arm muscles increases, temporarily causing a lack of blood flow, which reduces performance. Wearing an elbow support provides moderate compression that reduces unnecessary muscle movement and reduces fatigue. You can also expect a fatigue-reducing effect after the game, so if you get tired easily, why not try wearing an elbow support?