The Thrival Back Stretcher is a game changer and now it is in CARBON BLACK! Use this attachment for the best back release you’ll ever feel! Don’t stop there though, the Thrival Back Stretcher is the perfect shape for treating the Quad, IT Band, and Lat! This option comes with two Thrival Back Stretcher attachments and the Thrival Travel Board. To get all the attachments, including The Bullseye, Meat Grinder, Thrival Back Stretcher, and the Release Board, check out Thrival Full Body.