Men's Slipper Socks, also known as Hospital Socks, have the same warmth and comfort as original Heat Holders®, but include non-slip grippers on the bottom. The grippers provide better traction on indoor wood or tiled surfaces. They make great Bed Socks! Slipper socks are not recommended for use in shoes or boots. Women's Slipper Socks are also available. All styles available in multiple colors!