The Combo Brace is a lightweight rigid frame spinal support system that can be applied for a full variety of spinal disorders requiring external support. The Combo Brace is the spinal body "jacket" concept in combination with the rigid aluminum frame of the chair-back (LSO) or Knight-Taylor (TLSO) design. The aluminum frame can be contoured for a custom fit. Combo TLSO Brace. Available in 16" and 18" back lengths. 20" back length is available in sizes L-2XL only.