The Natori Women's Bliss Perfection Contour Underwire T-Shirt Bra is a highly rated option for women's spacer t-shirt bras on Amazon. This bra features a contour design that provides a natural and rounded shape. The underwire construction offers excellent support and lift, while the adjustable straps ensure a personalized fit. The bra also has a leotard back that helps to keep the straps in place. With its comfortable fit and flattering silhouette, this bra is a popular choice among women who want a spacer t-shirt bra that combines style and functionality.