Workman Ice Assist Long Sleeve Heat Shield Double Mesh Long Sleeve Shirt Work Shirt Workwear Long Sleeve -3℃ Heat Shield Heat Shield + High Breathability Double Mesh for 14x Breathability Heat Shield UV Cut Sweat-Absorbing Quick-Drying Wash Durability Soft Texture This is a button-up shirt. Size M There's a lot of mesh, I think it's very breathable. Length 70cm Shoulder Width 44cm Sleeve Length 59cm