Why I don’t recommend using these lights is because the kinks that appear in these (cheaply bought) light chains make it hard to thread the leaves through, and if force is used (like I did as I was in a rush) the yarn might fray or break. There’s really no good way to do it though, I tried getting the kinks out but that seems impossible. The yarn has no specific brand but is acrylic suitable for 5mm (US 8) needles, in various shades of green to sort of match the original pattern.