Handmade, adjustable length, width approximately 3cm. Cannula holder, approximately 26-29.5cm. The inside, which touches the skin, is soft smooth knit. A layer of domett batting is sandwiched inside, and the outer fabric is cotton. The zipper uses a Furupa craft-use heavy-duty zipper. It's stiffer than commercially available ones. Since this is handmade by an amateur, there may be 1mm or 2mm discrepancies in width and length due to things like curved stitching. Please understand this before purchasing! If the size fits, how about it? #CannulaHolder #CannulaBelt #Handmade