Buffbunny Sphynx black ribbed racerback keyhole front sports bra with removable paddings Onyx Black Size: Small New without tag - sold out on the website The Sphynx Ribbed Sports Bra is a high neck sports bra featuring a keyhole and ribbed criss-cross detailing. This light support bra has thick Y-shaped back straps and is made of a ribbed, soft fabric with the perfect amount of stretch for both comfort and performance.