Khaki cargo trousers, pockets on the sides and turn-ups at the bottoms of the legs. They fasten with a button and a zip.
Cotton 98% , Elastane 2% https://www.t-a-o.com/en/collection-tao-tweens/tao-tweens-boy/trousers/khaki-cargo-trousers-dusty-olive-88974.html