Ultra slim: 0.1cm thickness.
Velcro with breathable peroration: breathable and help keep the skin dry and cool.
Breathable mesh hole: breathable and perspiration.
Refective on both side: for style and visibility.
One more pouch: fit for cards, money and so on.
Button of the strip: keep armband and do not fall down during wearing.
Dimension of the pouch is 6 3/8” (L) x 3 1/8” (H) x 1/2” (W)