Give a whole new meaning to "the tie that binds"! This sleeve is made of soft, stitched, garment leather. The adjustable buckling straps are made of strong, latigo leather, and attached to the sleeves with rivets. A D-ring is added at the end as a point of attachment. This arm binder is designed to fit on smaller-framed or limber persons and may not fit broader-framed people, especially men. As a rough guideline, we suggest the Small / Medium size for people up to about 5'6" in height, and the Medium / Large for taller persons. Black Arm Binders • Laced: Sm/Med (J154) Med/Lrg (J155) • Zippered: Sm/Med (J156) Med/Lrg (J157) Red Arm Binders • Laced: Sm/Med (J280) Med/Lrg (J281) • Zippered: Sm/Med (J282) Med/Lrg (J283) Laced Sizes: Sm/Med: Shoulder 15" - 29"/ Length 21"/ Wrist 14" - 16"/ Upper Arm 23" - 27" Med/Lrg: Shoulder 15.