The tube top that does the most. This SKIMS strapless style is cut from soft, breathable cotton jersey that stretches smoothly for a flattering, second‑skin feel. A built‑in shelf bra with underbust elastic adds light support, making it the kind of base layer you reach for without thinking. 90% Cotton, 10% Elastane Strapless Interior Shelf Bra Underbust Elastic Style Code: TP-TUB-9645W-SOT