Thumbhole sleeves offer several benefits for custom long sleeve activewear: (1) keeps sleeves securely in place during movement — no riding up, (2) provides extra hand and wrist coverage for cold-weather runs, (3) improves layering under jackets without bunching, (4) creates a sleek, performance-oriented look. AOLAFREE offers thumbhole detailing across our women's and men's long sleeve collections. MOQ: 300 pcs per style (mix 2 colors = 150 pcs per color per style), sample: 2–3 weeks.