1 x HiyaHiya Circular 60-inch (150cm) Bamboo Knitting Needle, Size US 8 (5mm). HiyaHiya bamboo circular needles are smooth as silk with flexible cables and near perfect joins. Bamboo needles are made with high quality bamboo impregnated with resin. This makes HiyaHiya needles the strongest and smoothest bamboo needles available. Lifetime Product Warranty: If purchased from an authorized dealer, HiyaHiya guarantees all products against all manufacturing defects; warranty excludes products damaged due to accident, misuse, abuse or negligence.