Crafted from a stretchy Cotton, these feature a half elasticated waist for comfort, front zip with a button fastening, a regular straight leg.
The sizing is a true to size for a regular fit. If you want more of a slim fit, edge to the lower size. So if he is size 3 or 4, then you can probably go a size 3.
Also comes in beige and navy
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95% Cotton, 5% Elastane