Black volleyball arm supports, size M, approximately 40cm long. - Brand: difrunc - Size: M - Color: Black - Length: Approximately 40cm Made of sturdy fabric and provides a considerable amount of compression. It felt too small for me, and I found it difficult to move my arm. I've worn it twice but haven't used it during practice. I am 160cm tall, weigh 57kg, and my arms are more muscular and thicker than average, so size M might have been too small. Please feel free to ask any questions!