Saris SUPERBones 3 Bike - Lockable Boot RackSaris SUPERBones 3 The SUPERBones is the classic Bones trunk bike rack, reimagined. It's more secure, more beautiful, more intuitive, and fits a wide variety of trunk shapes. Meet the SUPERBones. It is the classic Bones trunk rack, reimagined. We took everything we've experienced, observed and learned from our Bones customers and used it to guide our design process. Out of that work was born a trunk rack more secure, more beautiful and more intuitive.