EMU Australia Women's Suede Shark Lo Boots wool Emu Australia's Shark Lo boot is warm, comfortable, stylish, very durable, and available in several colors! The Shark Lo is approximately 9" tall (floor to top of boot) with a rugged 1.5" thick sole. The Shark Lo features Emu's unique Micron 20 100% Australian Merino Wool lining (not a blend). The Merino Wool lining breathes and maintains a comfortable body temperature! Cool in Summer, warm in Winter! Fits true to U.S. Women's Sizing. If you usually wear a 1/2 size, order the next full size up (a 7 1/2 should order an 8).