Macrame bands come in many different sizes, colors, color combinations, styles, and commiserate prices. From Keychains, Zipper-pulls, and Dangles to Belts, and Pet Leashes we can make them all. Some styles are more appropriate for different uses. E.g. A King Cobra style is usually about 1 inch wide, thick, and stiff. It is perfect for dangles, zipper pulls, and keychains. It is not so good for chokers, bracelets, etc.
NOTE: Size is not the same as length. E.g. The size of a bracelet made with 3mm paracord is about two centimeters longer than the circumference of your wrist. You need a little slack, and the width of the cord constricts the circumference when it is bent into shape. Make sure you tell us whether you are telling us the circumference length, or the size.
Connections also vary. A common pinch clasp is great for bracelets, anklets, etc. Tails make a band adjustable but have tails hanging. Hybrids have both a clasp and tails. It offers the ability to put it on and off more easily, and adjust it and leave it, but it has tails. Metal core (Aluminum or Stainless Steel) makes cuffs. They have an open part for putting it on and off and can be bent to size. But, bend it too often and it breaks. Resin coated is stiff and fairly unbending, but it takes at least two weeks to cure enough to resist abuse. (Resin is hard to the touch after one day but takes about a month to completely cure.)