Yes, a well-chosen organic cotton tank top works across three seasons with the right outer layers. In spring and fall, wear it under a lightweight cardigan, an open front linen shirt, or a relaxed jacket. It adds warmth without bulk and works as a clean base for the outfit. In summer, it stands on its own. In the cooler months, it sits cleanly under heavier knits as a lightweight base layer. The key is to choose a versatile length and a neutral colour.