PowerTek Youth Boy's Mesh Loose Fit Ice Hockey Jock Shorts, Cup & Tabs for Socks Approximate ages: Small/Medium (3-5 yrs. old) / Large/X-Large (4-6 yrs. old) Sizing Guide (waist in inches): Small/Medium: 17"-19" / Large/X-Large: 19"-21" Lightweight and offers good breathability Drawstring waist, cup included Machine washable and highly durable