Wireless bras can absolutely provide enough support as long as they're constructed with supportive features. Look for bras that have compressive fabric, wide straps, a thick under-band, bonding or elastic beneath the bust, boning on either side of the bust, molded foam cups, and a wide band.
Honeylove's criss-cross mesh adds a signature touch, and a bonded underbust lifts without underwire. A wide wing with back-smoothing fabric eliminates back bulges. Adjustable straps and back let you modify your fit, and the straps can also be crisscrossed to stay hidden under racerback tank tops.
3D printed velvet adds support, and a bonded underbust lifts without underwire. Adjustable straps and back closure let you modify your fit. Straps can also be crisscrossed to stay hidden under racerback tank tops.