I only tried it on indoors and haven't used it outside. Size: Width 11.5cm, Height 16.2cm "Sauna item series realized with DESCENTE's special order" A see-through mesh pouch. Urethane resin material (nubuck foil) is used for the piping, giving it a sporty design. It's a convenient sacoche bag for storing minimal items like a mobile phone, cards, and facility locker keys. The two removable belts allow for both shoulder and hand-held use. This highly versatile item is useful not only within facilities but also in a wide range of situations.