I worked out soon after I bought it, and it no longer fits, so it's been sitting in my closet. The leather is in good condition and hasn't deteriorated, but this is just my amateur assessment, and it's a used item, so please refrain from purchasing if you are concerned! S and L sizes are common, but M size is rare, so I think it's valuable. Personally, it has a tight silhouette, so I think it would fit someone who is 170-175cm tall and slender.