Superba Bamboo is Rico Designs most popular yarn for socks. It is a standard 4 ply yarn with a lovely combination of bamboo fibre, wool and nylon - delivering comfort and durability! The colour options have been carefully created to represent whatever preference you have. Shop the complete Rico collection, including Rico Superba Bamboo 4 Ply Yarn and Earn Loyalty Reward Points on all purchases. FREE Delivery options also available.