Curli Vest Dog Harness Merino ClaspStep In Vest Harness for small to medium dogs. Merino wool is a natural product and a particularly high quality form of (Virgin) wool. It is obtained from merino sheep and is characterised by its special delicacy and softness. The main properties and advantages of Merino: Doesnt smell (even after long wear) and therefore has to be washed less often Sustainable and grows back Does not charge electrostatically (unlike synthetic materials) Insulates well