The Woolie Boolie™ is a study in versatility. Made from the finest Merino Wool these socks give more foot insulation than the standard Air-E-Ator® and Wool-E- Ator™ socks but have the same great breathability. There is a fine line between 'cushion' and 'overheating'. The Woolie Boolie™ straddles that line with ease and versatility making it great for cold weather sports.